diff --git a/ObsCore.tex b/ObsCore.tex
index 4607274..31f0728 100644
--- a/ObsCore.tex
+++ b/ObsCore.tex
@@ -9,24 +9,19 @@
 % interest groups.
 \ivoagroup{DM}
 
-\author{Mireille Louys}
-\author{Doug Tody}
 \author[http://www.ivoa.net/twiki/bin/view/IVOA/PatrickDowler]{Patrick Dowler}
+\author[http://www.ivoa.net/twiki/bin/view/IVOA/FrancoisBonnarel]{Fran\c{c}ois Bonnarel}
 \author{Daniel Durand}
-\author[http://www.ivoa.net/twiki/bin/view/IVOA/LaurentMichel]
-       {Laurent Michel}
-\author[http://www.ivoa.net/twiki/bin/view/IVOA/FrancoisBonnarel]
-       {Fran\c{c}ois Bonnarel}
+\author{Mireille Louys}
+\author[http://www.ivoa.net/twiki/bin/view/IVOA/LaurentMichel]{Laurent Michel}
 \author{Alberto Micol}
+\author{Doug Tody}
 
- \editor{Mireille Louys}
- \editor{Doug Tody}
- \editor[http://www.ivoa.net/twiki/bin/view/IVOA/PatrickDowler]{Patrick Dowler}
- \editor{Daniel Durand}
+\editor[http://www.ivoa.net/twiki/bin/view/IVOA/PatrickDowler]{Patrick Dowler}
+\editor{Mireille Louys}
 
-% \previousversion[????URL????]{ObsCore}
-\previousversion[http://www.ivoa.net/Documents/ObsCore/20161004/PR-ObsCore-v1.1-20161004.pdf]{R-ObsCore-v1.1-20161004.pdf}
-\previousversion[https://www.ivoa.net/documents/ObsCore/20111028/REC-ObsCore-v1.0-20111028.pdf]{REC-ObsCore-v1.0-20111028.pdf}
+\previousversion[https://www.ivoa.net/documents/ObsCore/20170509/index.html]{REC-ObsCore-v1.1}
+\previousversion[https://www.ivoa.net/documents/ObsCore/20111028/index.html]{REC-ObsCore-v1.0}
 
 \usepackage{longtable}
 \usepackage{rotating}