id: 05924502 dt: j an: 05924502 au: Subrahmanyam, N.V. ti: Commutative extended BCK-algebras. so: Math. Slovaca 61, No. 4, 523-538 (2011). py: 2011 pu: Mathematical Institute of the Slovak Academy of Sciences, Bratislava; Versita, Warsaw; Springer, Heidelberg la: EN cc: ut: ci: li: doi:10.2478/s12175-011-0026-1