@article{DAN_1972_203_5_a13,
     author = {Yu. A. Semenov},
     title = {An equation for the product of semigroups defined by the method of bilinear forms and its application to the {Schr\"odinger} equation},
     journal = {Doklady Akademii Nauk},
     pages = {1024--1026},
     publisher = {mathdoc},
     volume = {203},
     number = {5},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_203_5_a13/}
}