TY - JOUR AU - Włodzimierz M. Mikulski TI - The natural operators $T^{(0,0)}\rightsquigarrow T^{(1,1)}T^{(r)}$ JO - Colloquium Mathematicum PY - 2003 SP - 5 EP - 16 VL - 96 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm96-1-2/ DO - 10.4064/cm96-1-2 LA - en ID - 10_4064_cm96_1_2 ER -