@article{00009549,
title = {On ultrapowers of linear topological spaces without convexity conditions.},
journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie},
volume = {47(61)},
year = {1990},
pages = {71-81},
zbl = {0741.46038},
language = {en},
url = {http://dml.mathdoc.fr/item/00009549}
}
Kadelburg, Zoran; Radenović, Stojan. On ultrapowers of linear topological spaces without convexity conditions.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 47(61) (1990) pp. 71-81. http://gdmltest.u-ga.fr/item/00009549/