姜豪. 有限BCK-代数子代数个数估计定理[J]. 浙江大学学报(理学版), .
Jiang Hao. a theorem on the estimation of the number of subalgebras in a finite BCK-algebra. Journal of Zhejiang University (Science Edition), .
https://www.zjujournals.com/sci/CN/ 或 https://www.zjujournals.com/sci/CN/Y1986/V13/I1/6
Cited