TY  - JOUR
A1  - Grötschel, Martin
A1  - Holland, Olaf
T1  - Solution of large-scale symmetric travelling salesman problems
T2  - Mathematical Programming, Series A
Y1  - 1991
UR  - https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/3067
VL  - 51
IS  - 2
SP  - 141
EP  - 202
ER  -