diff --git a/HighEnergyObsCoreExt.tex b/HighEnergyObsCoreExt.tex
index 13510de..c6fcc47 100644
--- a/HighEnergyObsCoreExt.tex
+++ b/HighEnergyObsCoreExt.tex
@@ -8,7 +8,22 @@
 % interest groups.
 \ivoagroup{High Energy Interest Group}
 
-\author{I. Evans, M. Servillat, B. Kh\'elifi, J. Evans, M. Louys, M. Kettenis, F. Bonnarel, L. Michel, C. Boisson, M. Cresitello-Dittmar, O. Ates, K. Kosack, and The IVOA High Energy Interest Group}
+\author{
+	I. Evans (SAO/CXC, \href{mailto:ievans@cfa.harvard.edu}{ievans@cfa.harvard.edu},
+	M. Servillat (LUX - Observatoire de Paris, \href{mailto:mathieu.servillat@obspm.fr}{mathieu.servillat@obspm.fr},
+	B. Khélifi (APC - Université de Paris Cité/CNRS, \href{mailto:khelifi@in2p3.fr}{khelifi@in2p3.fr}),
+	J. Evans (SAO/CXC, \href{mailto:janet@cfa.harvard.edu}{janet@cfa.harvard.edu}),
+	M. Louys (CDS and ICube - Université de Strasbourg, \href{mailto:mireille.louys@unistra.fr}{mireille.louys@unistra.fr}),
+	M. Kettenis (Joint Institute for VLBI ERIC, \href{mailto:kettenis@jive.eu}{kettenis@jive.eu}),
+	F. Bonnarel (IVOA, \href{mailto:francois.bonnarel@gmail.com}{francois.bonnarel@gmail.com}),
+	L. Michel (SSC-XMM/SVOM - Strasbourg Observatory, \href{mailto:laurent.michel@astro.unistra.fr}{laurent.michel@astro.unistra.fr}),
+	C. Boisson (LUX - Observatoire de Paris, \href{mailto:catherine.boisson@obspm.fr}{catherine.boisson@obspm.fr}),
+	M. Cresitello-Dittmar (SAO/CXC, \href{mailto:mdittmar@cfa.harvard.edu}{mdittmar@cfa.harvard.edu}),
+	O. Ates (LUX - ObsParis, \href{mailto:onur.ates@obspm.fr}{onur.ates@obspm.fr}),
+	K. Kosack (IRFU - CEA/Université Paris-Saclay, \href{mailto:karl.kosack@cea.fr}{karl.kosack@cea.fr}),
+	J. Schnabel (ECAP, \href{mailto:jutta.schnabel@fau.de}{jutta.schnabel@fau.de}),
+	S. Hallmann (DESY Zeuthen, \href{mailto:steffen.hallmann@desy.de}{steffen.hallmann@desy.de}),
+}
 
 \editor{Ian Evans, Mathieu Servillat, Bruno Kh\'elifi, Janet Evans}
 
@@ -27,6 +42,18 @@
 \usepackage{amsmath}
 \usepackage{amssymb}
 \usepackage[nopostdot,style=super,nonumberlist,toc]{glossaries}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
+\usepackage{hyperref}
 
 \newacronym{IVOA}{IVOA}{International Virtual Observatory Alliance}
 \newacronym{VO}{VO}{Virtual Observatory}