Lyusternik, L. A.
The shortest lines: variational problems - Moscow MIR Publishers 1976 - 101p. - Little Mathematics Library .
Translated from the Russian by Yuri Ermolyev
517.97 LYU
The shortest lines: variational problems - Moscow MIR Publishers 1976 - 101p. - Little Mathematics Library .
Translated from the Russian by Yuri Ermolyev
517.97 LYU