@article{10_4153_CJM_1993_069_9,
     author = {Mart{\'\i}n-Reyes, F. J. and Pick, L. and Torre, A. De La},
     title = {A + \ensuremath{\infty} {Condition}},
     journal = {Canadian journal of mathematics},
     pages = {1231--1244},
     year = {1993},
     volume = {45},
     number = {6},
     doi = {10.4153/CJM-1993-069-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-069-9/}
}