//-->
Combinatorial optimization : networks and matroids
Lawler, Eugene L., (1976)
Optimization algorithms for networks and graphs
Minieka, Edward, (1978)
On the complexity of Convex Hull Algorithms if rotational minima can be found very fast
Huckenbeck, Ulrich, (1988)
On spanning tree problems with multiple objectives
Hamacher, H.W., (1994)