TY - JOUR AU - Matt Kaufmann TI - Mutually generic classes and incompatible expansions JO - Fundamenta Mathematicae PY - 1984 SP - 213 EP - 218 VL - 121 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-121-3-213-218/ DO - 10.4064/fm-121-3-213-218 LA - en ID - 10_4064_fm_121_3_213_218 ER -