@article{MO_1998_2_a4,
     author = {L. S. Pontryagin},
     title = {My {Gratitude} to {History} of {Mathematics}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {22--30},
     year = {1998},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_1998_2_a4/}
}