Transportation problems which can be solved by the use of hirsch-paths for the dual problems. - Peter Kleinschmidt; Carl W. Lee; Heinz Schannath (Math. Program., 1987)

Polynomiale und streng polynomiale Algorithmen für Netzwerkfluss-Probleme. - Heinz Schannath (Dt. Univ.-Verlag, 1991)

A strongly polynomial algorithm for the transportation problem. - Peter Kleinschmidt; Heinz Schannath (Math. Program., 1995)