共 4 条
- [1] Birkhoff G., 1944, B AM MATH SOC, V50, P764, DOI [10.1090/S0002-9904-1944-08235-9, DOI 10.1090/S0002-9904-1944-08235-9]
- [2] Gratzer G, 2008, UNIVERSAL ALGEBRA
- [3] SABIDUSSI G, 1973, SUBDIRECT REPRESENTA
- [4] Taylor W, 1972, ALGEBR UNIV, V2, P33