TY - JOUR AU - Day, Alan TI - Doubling Constructions in Lattice Theory JO - Canadian journal of mathematics PY - 1992 SP - 252 EP - 269 VL - 44 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-017-7/ DO - 10.4153/CJM-1992-017-7 ID - 10_4153_CJM_1992_017_7 ER -