@article{DVMG_2018_18_2_a1,
     author = {V. A. Bykovskii},
     title = {Integer {Somos-4} sequence with rational coefficients},
     journal = {Dalʹnevosto\v{c}nyj matemati\v{c}eskij \v{z}urnal},
     pages = {147--149},
     year = {2018},
     volume = {18},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DVMG_2018_18_2_a1/}
}