TY - JOUR AU - Drumm, Todd AU - Goldman, William TI - Crooked planes JO - Electronic research announcements of the American Mathematical Society PY - 1995 SP - 10 EP - 17 VL - 01 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-95-01002-X/ DO - 10.1090/S1079-6762-95-01002-X ID - ERAAMS_1995_01_1_a1 ER -