@article{GDZPPN002351714, title = {Another Proof for a Combinatorial Lemma in Fluctuation Theory.}, journal = {Mathematica Scandinavica}, volume = {30}, year = {1972}, pages = {123-126}, zbl = {0254.60008}, url = {http://dml.mathdoc.fr/item/GDZPPN002351714} }
Altschul, R. Another Proof for a Combinatorial Lemma in Fluctuation Theory.. Mathematica Scandinavica, Tome 30 (1972) pp. 123-126. http://gdmltest.u-ga.fr/item/GDZPPN002351714/