%0 Journal Article %A Neil Hindman %A Imre Leader %A Dona Strauss %T Extensions of infinite partition regular systems %J The electronic journal of combinatorics %D 2015 %V 22 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/4568/ %R 10.37236/4568 %F 10_37236_4568