@article{COMIM_1995_3_1_a1,
author = {D{\l}otko, Tadeusz},
title = {Some records on second order differential equations},
journal = {Communications in Mathematics},
pages = {21--26},
year = {1995},
volume = {3},
number = {1},
mrnumber = {1474062},
zbl = {0854.34015},
language = {en},
url = {http://geodesic.mathdoc.fr/item/COMIM_1995_3_1_a1/}
}
Dłotko, Tadeusz. Some records on second order differential equations. Communications in Mathematics, Tome 3 (1995) no. 1, pp. 21-26. http://geodesic.mathdoc.fr/item/COMIM_1995_3_1_a1/
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