@inproceedings {1006, title = {Convex Geometry and Semiflows in P/T nets. A comparative study of algorithms for computation of minimal P-semiflows}, booktitle = {10th International Conference on Application and Theory of Petri Nets}, year = {1989}, month = {06/1989}, pages = {74-95}, address = {Bonn, Germany}, author = {J.M. Colom and M. Silva} }