@article{DAN_1960_135_4_a22,
     author = {R. G. Kostyanovsky},
     title = {Reaction of ethylenimine with formaldehyde},
     journal = {Doklady Akademii Nauk},
     pages = {853--856},
     publisher = {mathdoc},
     volume = {135},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_4_a22/}
}