On continuity of circle operation in normed algebras.
Collectanea mathematica (1966)
@article{CLTM_1966_1966_1_a3,
author = {Kamthan, P. K.},
title = {On continuity of circle operation in normed algebras.},
journal = {Collectanea mathematica},
year = {1966},
language = {en},
url = {http://geodesic.mathdoc.fr/item/CLTM_1966_1966_1_a3/}
}
Kamthan, P. K. On continuity of circle operation in normed algebras.. Collectanea mathematica (1966). http://geodesic.mathdoc.fr/item/CLTM_1966_1966_1_a3/