diff --git a/content/dataset.html b/content/dataset.html
index a53d1901..d5db919c 100644
--- a/content/dataset.html
+++ b/content/dataset.html
@@ -99,12 +99,12 @@ draft: false
     var data= await loadAllData()
     window.defaultDats = []
     for (const sub of Object.values(data)) {
-      for (const doi of uniq(sub.map(d => d.DOI.string))) {
-        const subdoi = sub.filter(d => d.DOI.string === doi)
+      for (const doi of uniq(sub.map(d => (d.DOI == null ? "" : d.DOI.string)))) {
+        const subdoi = sub.filter(d => (d.DOI == null ? "" : d.DOI.string) === doi)
         for (mol of uniq(subdoi.map(d => d.molecule))) {
           const submol = subdoi.filter(d => d.molecule === mol)
           const source = submol.find((d) => {
-            if (d.DOI.string === "10.1021/acs.jctc.8b01205") {
+            if ((d.DOI == null ? "" : d.DOI.string) === "10.1021/acs.jctc.8b01205") {
               return d.method.name === "CASPT2" && d.method.basis === "aug-cc-pVDZ"
             } else {
               return d.method.isTBE
@@ -120,11 +120,24 @@ draft: false
 
       window.defaultDats = window.defaultDats.concat(sub)
     }
-    await doiCache.addRange(Array.from(new Set(window.defaultDats.map(d=>d.DOI.string))))
+    await doiCache.addRange(Array.from(new Set(window.defaultDats.filter(d=>d.DOI!==null).map(d=>d.DOI.string))))
     window.defaultDats = window.defaultDats.sort((datfa,datfb)=>{
-      const puba = doiCache.get(datfa.DOI.string).format('data', { format: 'object' })[0]
-      const pubb = doiCache.get(datfb.DOI.string).format('data', { format: 'object' })[0]
-      return pubUtils.getIssuedDate(puba) - pubUtils.getIssuedDate(pubb)
+      const DOIa=datfa.DOI
+      const DOIb=datfb.DOI
+      if (DOIa == null && DOIb == null) {
+        return 0
+      }
+      else if (DOIa == null){
+        return 1
+      }
+      else if (DOIb == null){
+        return -1
+      }
+      else {
+        const puba = doiCache.get(DOIa.string).format('data', { format: 'object' })[0]
+        const pubb = doiCache.get(DOIb.string).format('data', { format: 'object' })[0]
+        return pubUtils.getIssuedDate(puba) - pubUtils.getIssuedDate(pubb)   
+      }
     })
     processingIndicator.isActive = false
     reloadCustomFiles()
@@ -194,7 +207,8 @@ draft: false
     const sets = await (async () => {
       if (name === "DOI") {
         const publis = await getPublis()
-        const sets = publis.sets
+        var sets = publis.sets
+        sets.set("","Unknow set")
         return sets
       }
       else {
@@ -238,7 +252,7 @@ draft: false
       case "basis":
         return data.method.basis
       case "DOI":
-        return data.DOI.string
+        return data.DOI === null ? "" : data.DOI.string
       default:
         return data[name]
         break;
@@ -256,7 +270,7 @@ draft: false
       if (!(sdatdic.has(key))) {
         sdatdic.set(key, new Map())
       }
-      const myT1s = T1ref.get(d.DOI.string).get(d.molecule)
+      const myT1s = T1ref.get(d.DOI == null ? "" : d.DOI.string).get(d.molecule)
       for (const exc of d.excitations) {
         var allowT1 = false
         const T1Key = JSON.stringify((exc.initial, exc.final))
@@ -367,14 +381,14 @@ draft: false
       })
     })
     window.T1ref = new Map()
-    var dois = new Set(window.filtData.map((d) => d.DOI.string))
+    var dois = new Set(window.filtData.map((d) =>d.DOI===null ? "" : d.DOI.string))
     var mols = new Set(window.filtData.map((d) => d.molecule))
     await window.doiCache.addRange(dois)
     for (const doi of dois) {
       window.T1ref.set(doi, new Map())
       for (const mol of mols) {
         window.T1ref.get(doi).set(mol, new Map())
-        var TBESortdat = window.dats.filter(d => d.DOI.string === doi && d.molecule === mol).sort((d1, d2) => {
+        var TBESortdat = window.dats.filter(d => (d.DOI === null ? "" : d.DOI.string) === doi && d.molecule === mol).sort((d1, d2) => {
           if (d1.method.isTBE && !d2.method.isTBE) {
             return -1
           } else if (!d1.method.isTBE && d2.method.isTBE) {
@@ -398,7 +412,7 @@ draft: false
       }
     }
     $(sel_ref).empty()
-    for (const el of uniq(window.filtData.map(d => [d.method, d.DOI.string]))) {
+    for (const el of uniq(window.filtData.map(d => [d.method, (d.DOI === null ? null : d.DOI.string)]))) {
       op = $("<option/>", {
         value: JSON.stringify(el)
       }).text(el[0])
@@ -413,10 +427,11 @@ draft: false
     var data = $("#data")
     $(data).empty();
     if (window.filtData.length > 0) {
-      const sets = (await getPublis()).sets
+      var sets = (await getPublis()).sets
+      sets.set("","Unknow set")
       for (const doi of doiCache.keys()) {
         paperdata = window.filtData.filter((d) => {
-          return d.DOI.string == doi
+          return (d.DOI === null ? "" : d.DOI.string) == doi
         })
         var methods = uniq(paperdata.map(d => d.method))
         const sortedMethods = methods.sort((a, b) => {
@@ -451,7 +466,7 @@ draft: false
         datadic = new Map()
         for (const dat of paperdata) {
           const key1 = dat.molecule;
-          const myT1s = T1ref.get(dat.DOI.string).get(dat.molecule)
+          const myT1s = T1ref.get(dat.DOI == null ? "" : dat.DOI.string).get(dat.molecule)
           if (!datadic.has(key1)) {
             datadic.set(key1, new Map())
           }
diff --git a/content/publications.html b/content/publications.html
index c50ecbfd..f6b270b9 100644
--- a/content/publications.html
+++ b/content/publications.html
@@ -20,7 +20,7 @@ draft: false
   window.onload = async function () {
     var div = document.getElementById("publis_div")
     const Cite = require("citation-js")
-    const sdois = uniq(Object.values(await loadAllData()).flat().map(d => d.DOI.string))
+    const sdois = uniq(Object.values(await loadAllData()).flat().filter(d => d.DOI !== null).map(d => d.DOI.string))
     const spubliscite = await Cite.async(sdois)
     const pubs = await getPublis()
     const uospublis = spubliscite.format('data', { format: 'object' })