1. Stability Theory of Dynamical Systems;Bhatia,1970
2. Approximative and fundamental retracts;Bogatyĭ;Mat. Sb. (N.S.),1974
3. On the structure of attracting compacta;Bogatyĭ;Differentsialnye Uravneniya,1989
4. Theory of Retracts;Borsuk,1967
5. On movable compacta;Borsuk;Fund. Math.,1969