About one modulus inequality of the V\"ais\"al\"a Type
  The present paper is devoted to the study of space mappings, which are more general than quasiregular. The analogue of the known V\"ais\"al\"a inequality for the special types of curves was proved for the open, discrete, differentiable a.e. mappings having $N,$ $N^{-1}$ and $ACP^{-1}$ properties. 
Evgeny Sevost'yanov
math.CV