TY - JOUR AU - Keith Devlin TI - Reduced powers of $ℵ_2$-trees JO - Fundamenta Mathematicae PY - 1983 SP - 129 EP - 134 VL - 118 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-118-2-129-134/ DO - 10.4064/fm-118-2-129-134 LA - en ID - 10_4064_fm_118_2_129_134 ER -