@article{10_4064_am36_1_5,
     author = {W/lodzimierz Szwarc},
     title = {On cycling in the simplex method of
 the transportation problem},
     journal = {Applicationes Mathematicae},
     pages = {59--73},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2009},
     doi = {10.4064/am36-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am36-1-5/}
}