T. Asaftei. Buletinul Institutului Politehnic DIN Iasi published by Gheorghe Asachi Technical University of Iasi Automatic Control and Computer Science Section, (2012)
M. Cabasino, A. Giua, and C. Seatzu. Control of Discrete-Event Systems, volume 433 of Lecture Notes in Control and Information Sciences, Springer London, (2013)