1. Bellman, R.E.: Stability of Differential Equations. McGraw-Hill, New York (1953). Russian transl.: IL, Moscow (1954)
2. IRE Trans.;J.E. Bertram,1959
3. Caughey, T.K., Gray, A.H. Jr.: On the almost sure stability of linear dynamic systems with stochastic coefficients. Trans. ASME Ser. E J. Appl. Mech. 32, 365–372 (1965)
4. Demidovich, B.P.: On the dissipativity of a certain non-linear system of differential equations. I. Vestnik Moskov. Univ. Ser. I Mat. Meh. 6, 19–27 (1961) (Russian)
5. Demidovich, B.P.: On the dissipativity of a certain non-linear system of differential equations. II. Vestnik Moskov. Univ. Ser. I Mat. Meh. 1, 3–8 (1962) (Russian)