A probabilistic multiple criteria sorting approach based on distance functions. - Berkay Çelik; Esra Karasakal; Cem Iyigün (Expert Syst. Appl., 2015)

The effect of using humor and concept cartoons in high school ICT lesson on students' achievement, retention, attitude and anxiety. - Berkay Çelik; Kerim Gündogdu (Comput. Educ., 2016)