@article{bwmeta1.element.desklight-a9075fc0-342c-4336-83f0-de403ae5c918,
author = {A. K. Layek},
title = {Directional qualitative cluster sets},
journal = {Annales Polonici Mathematici},
volume = {48},
year = {1988},
pages = {167-173},
zbl = {0681.26004},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-a9075fc0-342c-4336-83f0-de403ae5c918}
}
A. K. Layek. Directional qualitative cluster sets. Annales Polonici Mathematici, Tome 48 (1988) pp. 167-173. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-a9075fc0-342c-4336-83f0-de403ae5c918/