000 00430nam a2200157Ia 4500
008 190516s9999 xx 000 0 und d
028 _bComplimentary
100 _aLyusternik, L.A.
_917021
245 4 _aThe Shortest Lines
_cVariational Problems
260 _bMir Publishers
_c1976
_aMoscow
300 _a103
600 _tMathematics
_9131988
650 _aMathematics
_9131988
942 _cBK
999 _c124371
_d124371