TY - JOUR AU - Hofuku, I. AU - Oshima, K. TI - A method of constructing the frame of a directed graph JO - International Journal of Applied Mathematics and Computer Science PY - 2013 SP - 823 EP - 837 VL - 23 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IJAMCS_2013_23_4_a10/ LA - en ID - IJAMCS_2013_23_4_a10 ER -