1. Transversal Mappings and Flows;Abraham,1967
2. Almost Periodic Functions;Besicovitch,1932
3. Methods of Accelerated Convergence in Nonlinear Mechanics;Bogoljubov,1976
4. A generalization of a theorem of Perron;Bylov;Differencial'nye Uravnenija,1965
5. The structure of solutions of a system of linear differential equations with almost periodic coefficients;Bylov;Mat. Sb. (N.S.),1965