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@article{MASLO_1993__43_5_a5, author = {Andres, J\'an and Stan\v{e}k, Svatoslav}, title = {Note to the {Lagrange} stability of excited pendulum type equations}, journal = {Mathematica slovaca}, pages = {617--630}, publisher = {mathdoc}, volume = {43}, number = {5}, year = {1993}, mrnumber = {1273714}, zbl = {0870.34056}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1993__43_5_a5/} }
Andres, Ján; Staněk, Svatoslav. Note to the Lagrange stability of excited pendulum type equations. Mathematica slovaca, Tome 43 (1993) no. 5, pp. 617-630. http://geodesic.mathdoc.fr/item/MASLO_1993__43_5_a5/