Differential equations and the calculus of variations /
Elsgolts, L
Differential equations and the calculus of variations / by l Elsgolts - Moscow : Mir publishers, 1970. - 146p. :
Mathematics
517.38 / YAN.D
Differential equations and the calculus of variations / by l Elsgolts - Moscow : Mir publishers, 1970. - 146p. :
Mathematics
517.38 / YAN.D