TY - JOUR A1 - Letchford, A.N. A1 - Pokutta, Sebastian A1 - Schulz, A.S. T1 - On the membership problem for the 0,1/2-closure T2 - Operations Research Letters Y1 - 2011 UR - https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/7645 UR - http://www.box.net/shared/zxx88q38l3 N1 - Additional Note: doi:10.1016/j.orl.2011.07.003 N1 - URL of the PDF: http://dx.doi.org/10.1016/j.orl.2011.07.003 VL - 39 IS - 5 SP - 301 EP - 304 ER -