Reich, Simeon (ed.) et al., Optimization theory and related topics. A workshop in memory of Dan Butnariu, Haifa, Israel, January 11–14, 2010. Providence, RI: American Mathematical Society (AMS); Ramat Gan: Bar-Ilan University (ISBN 978-0-8218-6908-6/pbk; 978-0-8218-8778-3/ebook). Contemporary Mathematics 568. Israel Mathematical Conference Proceedings, 241-249 (2012).