TY - JOUR A1 - Stephan, RĂ¼diger A1 - Spiegelberg, Ingo T1 - On cardinality constrained polymatroids JF - Electronic Notes in Discrete Mathematics Y1 - 2010 UR - http://www.sciencedirect.com/science/article/B75GV-50JJF7F-4K/2/2761e6edfcb262af0ba4856767d82a42 U6 - https://doi.org/DOI: 10.1016/j.endm.2010.05.129 VL - 36 SP - 1017 EP - 1024 ER -