Takapoui, Reza and Mohele, Nicholas and Boyd, Stephen and Bemporad, Alberto  A Simple Effective Heuristic for Embedded Mixed-Integer Quadratic Programming.  In: American Control Conference (ACC) 2016, July 6-8, 2016, Boston  ISSN 2378-5861. ISBN 978-1-4673-8681-4.      (2015)