1-5 | Le direzioni caratteristiche di una trasformazione puntuale. Villa, Mario |
7-13 | Об одном классе неавтономных нелинейных дифференциальных уравнений $n$-го порядка. Berkovich, L. M. |
15-35 | Polars in distributive lattices with the smallest element. Fiala, František |
37-74 | Monotonic properties of zeros and extremants of the differential equation $y''+q(t)y=0$. Vosmanský, Jaromír |