TY - JOUR AU - A. V. Efimov AU - V. P. Potapov TI - $J$-expanding mtrix functions and their role in the analytical theory of electrical circuits JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1973 SP - 69 EP - 140 VL - 28 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1973_28_1_a1/ LA - en ID - RM_1973_28_1_a1 ER -