@article{DMGAA_2016_36_1_a6,
     author = {Jun, Young and Song, Seok},
     title = {Superior subalgebras and ideals of {BCK/BCI-algebras}},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {85--99},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2016_36_1_a6/}
}