@article{ASUO_2009_XVII_2_a13, author = { Hua Mao}, title = { {Some} characterization of infinite antimatroids }, journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}}, publisher = {mathdoc}, volume = {XVII}, number = {2}, year = {2009}, url = {http://geodesic.mathdoc.fr/item/ASUO_2009_XVII_2_a13/} }