TY - JOUR AU - Theo K. Dijkstra TI - Pyrrho's Lemma, or have it your Way. JO - Metrika PY - 1995 SP - 119 EP - 126 VL - 42 IS - 3-4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MET_1995__42_3-4_176564/ ID - MET_1995__42_3-4_176564 ER -