Star topological groupoids

O. MUCUK

Normal boundary value problems for differential equations of higher order

F. G. MAKSUDOV, Z. I. ISMAILOV

The group structure of Hecke groups H $(lambda_q)$

İ. N. CANGÜL

On comformally flat Lorentzian spaces satisfying a certain condition on the curvature tensor

M. ERDOĞAN

On the additive group structure of nonstandard models of Z

M. TERZİLER, Ç. GENCER

Extensions of Caristi-Kirk's theorem

M. O. DIALLO, M. OUDADESS

A note on double sequences of fuzzy numbers

E. SAVAŞ

Relations between classes of Dragilev spaces $(f_1)_{sigma}$ and $(f_2)_{sigma}$ sigma for arbitrary function $f^{-1}_1 circ f_2$.

V. KASHIRIN, A. VAKULENKO

Rings in which strongly prime right ideals are finitely generated

Arif KAYA

$T_2$-objects in categories of filter and local filter convergence spaces

M. BARAN