Advances in Mathematics: Scientific Journal

2016, Vol. 5, No. 2

Sahsene Altinkaya and Sibel Yalçin
Mushtaq Ahmad Shah, Mridula Purohit and M.H.Gulzar

Georgi Evtimov, Delyan Keremedchiev and Maria Barova

Elena Hadzieva, Katerina Hadzi-Velkova Saneva and Ninoslav Marina