1. G. B. Dantzig andD. R. Fulkerson, On the max-flow min-cut theorem of networks, Linear Inequalities and Related Systems,Annals of Math. Study,38 (1956), S. 215–221.
2. R. P. Dilworth, A decomposition theorem for partially ordered sets,Annals of Math.,51 (1950), S. 161–166.
3. J. Egerváry, Matrixok kombinatorikus tulajdonságairól,Mat. és Fiz. Lapok,38 (1931), S. 16–27.
4. Ky Fan, On systems of linear inequalities,Annals of Math. Study,38 (1956), S. 99–156.
5. L. R. Ford, Jr. andD. R. Fulkerson, Maximal flow through a network,Canadian Journal of Math.,8 (1956), S. 399–404.