On the existence of a component-wise positive radially symmetric solution for a superlinear system. Zhidkov, P. — 2007 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
An analytical approach for quasi-linear equation in second order. Perepelkin, E. E.; Zhidkov, E. P. — 2001 Computational Methods in Applied Mathematics
On invariant measures for some infinite-dimensional dynamical systems P. E. Zhidkov — 1995 Annales de l'I.H.P. Physique théorique