@article{DVMG_2019_19_1_a9,
     author = {A. V. Ustinov},
     title = {A simplified proof of {Ward's} formula for elliptic sequences},
     journal = {Dalʹnevosto\v{c}nyj matemati\v{c}eskij \v{z}urnal},
     pages = {84--87},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DVMG_2019_19_1_a9/}
}