Prof. Dr. Galina Bogdanova – Institute of Mathematics and Informatics at BAS, e-mail: g.bogdanova@gmail.com

Prof. DSc Stefka Buyuklieva – Veliko Turnovo University and Regional Academic Center – Veliko Tarnovo, e-mail: stefka@ts.uni-vt.bg

Prof. DSc Stoyan Kapralov – Technical University – Gabrovo, e-mail: s.kapralov@gmail.com

Tel. to contact the organizers:  +359 88 8221825