Colette Rolland, Eric S. K Yu, Lin Liu. Fifth edition of the Workshop on Requirements Engineering for Services (REFS’2011). IEEE Xplore.
Computer Software and Applications Conference (COMPSAC), 2011 IEEE 35th Annual,
⟨IEEE⟩, 2011, Workshop on Requirements Engineering for Services (REFS’2011), ISBN 978-0-7695-4439-7.
⟨hal-01081014⟩ 
