00478nam a2200157 a 4500 DC 515 SOC 1985 A058 Or. Kupershmidt, Boris A., Discrete Lax equations and differential-difference calculus / [Paris] : Soci©♭t©♭ math©♭matique de France, 1985 212 p. ; 24 cm Summary in French Differential equations, Partial Calculus of variations EK 13912 13912 0 0 0 515_000000000000000_SOC_1985_A058_OR 0 65500 LBA LBA A058 2017-10-03 515 SOC 1985 A058 Or. A14913 2017-10-03 2017-10-03 EK