On L 1 convergence of certain cosine sums with twice quasi semi-convex coefficients. Braha, N.L. — 2010 APPS. Applied Sciences
On the behavior of r -derivative near the origin of sine series with convex coefficients. Krasniqi, Xh.Z.; Braha, N.L. — 2007 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
On L 1 convergence of certain cosine sums. Braha, N.L.; Krasniqi, Xh.Z. — 2009 Bulletin of Mathematical Analysis and Applications [electronic only]
Some properties of paranormal and hyponormal operators. Braha, N.L.; Lohaj, M; Marevci, F.H.; Lohaj, Sh. — 2009 Bulletin of Mathematical Analysis and Applications [electronic only]