共 7 条
[1]
FUJIWARA T, TO BE PUBLISHED
[3]
Gratzer G, 2008, UNIVERSAL ALGEBRA
[4]
Horn A., 1951, J SYMBOLIC LOGIC, V16, P14, DOI DOI 10.2307/2268661
[6]
Maltsev A. I., 1966, ALGEBRA LOGIKA, V5, P3
[7]
SHAFAAT A, 1970, NOT AM MATH SOC, V17, P425