TY - JOUR AU - Bergman, John G. TI - A duality theorem for standard threads JO - Czechoslovak Mathematical Journal PY - 1971 SP - 167 EP - 171 VL - 21 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101014/ DO - 10.21136/CMJ.1971.101014 LA - en ID - 10_21136_CMJ_1971_101014 ER -