and then they investigated several relations
between d-algebras and BCK-algebras as well as some other interesting
relations between d-algebras and oriented digraphs. Recently, Y. B. Jun,
E. H. Roh and H. S. Kim introduced in [6] a new notion, called an BH-
algebra, determined by (1), (2) x0 = x and (6), which is a generalization
of BCH=BCI=BCK-algebras. They also defined the notions of ideals and
boundedness in BH-algebras, and showed that there is a maximal ideal
in bounded BH-algebras. J. Neggers and H. S. Kim introduced in [9] and
investigated a class of algebras which is related to several classes of algebras
of interest such as BCH=BCI=BCK-algebras and which seems to have
rather nice properties without being excessively complicated otherwise. In
this paper we discuss further relations between B-algebras and other topics,
especially quasigroups. This is a continuation of [9].