%0 Journal Article %A Apt, K. R. %T Recursive Embeddings of Partial Orderings %J Canadian journal of mathematics %D 1977 %P 349-359 %V 29 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-038-5/ %R 10.4153/CJM-1977-038-5 %F 10_4153_CJM_1977_038_5