TY  - JOUR
AU  - Dymek, Grzegorz
TI  - On a period of elements of pseudo-BCI-algebras
JO  - Discussiones Mathematicae. General Algebra and Applications
PY  - 2015
SP  - 21
EP  - 31
VL  - 35
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DMGAA_2015_35_1_a1/
LA  - en
ID  - DMGAA_2015_35_1_a1
ER  -