@article{120296, author = {Tadeusz D\l otko}, title = {Periodic solutions of some second order differential systems}, journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica}, volume = {32}, year = {1993}, pages = {35-41}, zbl = {0795.34030}, mrnumber = {1273167}, language = {en}, url = {http://dml.mathdoc.fr/item/120296} }
Dłotko, Tadeusz. Periodic solutions of some second order differential systems. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 32 (1993) pp. 35-41. http://gdmltest.u-ga.fr/item/120296/
On periodic boundary value problem for a differential equation of n-th order, Annales Math. Silesianae, Vol.5, 1991, 43-50. (1991) | MR 1153504
Periodic boundary value problem for a matrix differential equation, J. Bolyai Math. Soc., Colloquium on differential equations and applications, Budapest, 1991, in press. (1991) | Zbl 0810.34018
Coincidence degree and nonlinear differential equations, Springer Verlag, 1977, p. 262. (1977) | MR 0637067 | Zbl 0339.47031
Topological methods in the theory of nonlinear integral equations, Moscow, 1956, (in Russian). (1956)
Elements of functional analysis, PWN Warsaw, 1959, (in Polish). (1959)
On the existence of periodic solutions of second order forced differential equations, Nonlinear Anal., Methods and Appl., Vol. 11, nr.2, 1987, 275-284. (1987) | MR 0877887
Topological degree methods in nonlinear boundary value problems, CBMS Conf. in Math., 40, American Math. Soc, Providence, RI, 1979. (1979) | MR 0525202 | Zbl 0414.34025
Boundary value problems at resonance for vector second order non-linear ord. diff. equations, Proc. Equadiff. IV, Prague 1977, LNM 703, 241-249, Springer Verlag, 1979. (1977) | MR 0535345
Qualitative Theorie Nichtlinearer Differentialgleichungen, Cremonese, Roma, 1963. (1963) | MR 0158121
Periodic Boundary value problems for second order differential equations, Acta UPO, Fac. Rer. Nat., Math. XXIX, Vol. 97(1990), 83-91. (1990) | MR 1144833 | Zbl 0752.34021
Foundations of the theory of boundary value problems in ord. diff. equat., Zinatne, Riga, 1978 (in Russian). (1978)
On the qualitative behaviour of solutions of Lienard equation, J. Diff. Equat., Vol. 67, nr. 2, 1987, 269-277. (1987) | MR 0879697 | Zbl 0613.34031