TY - JOUR AU - Roman Zuber TI - Variables reduction methods JO - Mathematica Applicanda PY - 1973 SP - 69 EP - 84 VL - 1 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/ma.v1i1.298/ DO - 10.14708/ma.v1i1.298 LA - pl ID - 10_14708_ma_v1i1_298 ER -