01236cam a2200289 i 450099100428143310753620240314130835.0230621s1970 ru a rb 001 0 eng dBibl. Dip.le Aggr. Matematica e Fisica - Sez. Fisicaeng515.64LC QA371510.34Ėlʹsgolʹt︠s︡, L. Ė.(Lev Ėrnestovich)447993Different︠s︡ialʹnye uravenii︠a︡ i variat︠s︡ionnoe ischislenie.English3655111Differential equations and the calculus of variations /L. Elsgolts ; translated from the russian by George YankovskyMoscow :Mir Publishers,19702nd reprint 1973440 p. ;22 cmTranslation of: Different︠s︡ialʹnye uravnenii︠a︡ i variat︠s︡ionnoe ischislenieOther title page in russianBibliography: p. [436]Differential equationsCalculus of variationsDifferent︠s︡ialʹnye uravenii︠a︡ i variat︠s︡ionnoe ischislenie991004281433107536Different︠s︡ialʹnye uravenii︠a︡ i variat︠s︡ionnoe ischislenie3655111UNISALENTO