Shortest lines: variational problems. tr by Yuri Ermolyev.
LYUSTERNIK (L A)
Shortest lines: variational problems. tr by Yuri Ermolyev. - Moscow Mir Publishers 1976 - 104 p
PB
Geometry
516 LYUS
Shortest lines: variational problems. tr by Yuri Ermolyev. - Moscow Mir Publishers 1976 - 104 p
PB
Geometry
516 LYUS