@article{TIMM_1992_1_a1,
     author = {V. A. Dem'yanenko},
     title = {Obvious description of isogeny of elliptic cur},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {13--19},
     publisher = {mathdoc},
     volume = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_1992_1_a1/}
}