@misc{MO_1998_5_2_a1,
     title = {From {Memoirs} of {A.} {I.} {Pontryagina}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {7--14},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_1998_5_2_a1/}
}