θ -regular spaces. Janković, Dragan S. — 1985 International Journal of Mathematics and Mathematical Sciences
On α -continuous functions Dragan S. Janković; Ch. Konstadilaki-Savvopoulou — 1992 Mathematica Bohemica Classes of functions continuous in various senses, in particular θ -continuous, α -continuous, feeblz continuous a.o., and relations between the classes, are studied.
On compactness with respect to semi-open sets Maximilian Ganster; Dragan S. Janković; Ivan L. Reilly — 1990 Commentationes Mathematicae Universitatis Carolinae