Geodesic
On the structure of Somos-4 sequence of rational functions
Dalʹnevostočnyj matematičeskij žurnal, Tome 18 (2018) no. 2, pp. 216-218.

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In the paper the result of Zelevinsky and Fomin on the Laurent property of the Somos-4 sequence is specified. 
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M. D. Monina. On the structure of Somos-4 sequence of rational  functions. Dalʹnevostočnyj matematičeskij žurnal, Tome 18 (2018) no. 2, pp. 216-218. http://geodesic.mathdoc.fr/item/DVMG_2018_18_2_a8/

[1] S. Fomin, A. Zelevinsky, “The Laurent phenomenon”, Adv. Appl. Math., 28 (2002), 119–144 | DOI | MR | Zbl

[2] M. D. Monina, “Chetyrëkhparametricheskoe semeistvo tselochislennykh posledovatelnostei Somos-4”, Dalnevostochnyi matematicheskii zhurnal, 18:1 (2018), 85–89 | MR

[3] V. A. Bykovskii, “O loranovosti posledovatelnosti Somos-4”, Dalnevostochnyi matematicheskii zhurnal, 18:1 (2018), 18–22 | MR