On the quasiuniqueness of solutions of degenerate equations in Hilbert space. Schuchman, Vladimir — 1988 International Journal of Mathematics and Mathematical Sciences
The behavior of solutions of nonlinear differential equations in Hilbert space. I. Schuchman, Vladimir — 1988 International Journal of Mathematics and Mathematical Sciences
On behavior of solutions of nonlinear differential equations in Hilbert space. II. Schuchman, Vladimir — 1988 International Journal of Mathematics and Mathematical Sciences