Generalized Cauchy Equations on Groups. (Short Communication). Vladimir Drobot — 1970 Aequationes mathematicae
Gaps in the sequence n 2 ϑ ( m o d 1 ) . Drobot, Vladimir — 1987 International Journal of Mathematics and Mathematical Sciences
On the speed of convergence of iteration of a function. Drobot, Vladimir — 1994 International Journal of Mathematics and Mathematical Sciences
On the natural density of the range of the terminating nines function. Kennedy, Robert K.; Cooper, Curtis N.; Drobot, Vladimir; Hickling, Fred — 1989 International Journal of Mathematics and Mathematical Sciences