TY - JOUR AU - J. Lawrence TI - Valuations and Polarity. JO - Discrete & computational geometry PY - 1988 SP - 307 EP - 324 VL - 3 IS - 1-2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DCG_1988__3_1-2_131053/ ID - DCG_1988__3_1-2_131053 ER -