TY - JOUR AU - Katarina Surla TI - Determination of the Invariant Interval for Positive Linear Operators by a Nonstationary Iterative Procedure JO - Publications de l'Institut Mathématique PY - 1981 SP - 177 VL - _N_S_30 IS - 44 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PIM_1981_N_S_30_44_a24/ LA - en ID - PIM_1981_N_S_30_44_a24 ER -