Tsodyks V M

Publications in Math-Net.Ru

1. On sets of points where the derivative is finite or infinite correspondingly
   
   Dokl. Akad. Nauk SSSR, 114:6 (1957),  1174–1176
2. On sets of points where the derivative is $+\infty$ or $-\infty$ correspondingly
   
   Dokl. Akad. Nauk SSSR, 113:1 (1957),  36–38
3. On sets of points where the derivative is equal to $+\infty$ or $-\infty$ respectively
   
   Mat. Sb. (N.S.), 43(85):4 (1957),  429–450