@article{oai:kanazawa-u.repo.nii.ac.jp:00011529,
 author = {Yamamoto, Koichi},
 issue = {1},
 journal = {The science reports of the Kanazawa University＝金沢大学理科報告},
 month = {Mar},
 pages = {5--6},
 title = {Note on the Order of Free Distributive Lattices},
 volume = {2},
 year = {1953}
}