TY - JOUR AU - G. Cravo TI - An Algebraic Analysis of Workflows JO - Mathematica balkanica PY - 2011 SP - 375 VL - 25 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MABA_2011_25_4_a3/ ID - MABA_2011_25_4_a3 ER -