TY - JOUR AU - X. Y. Lu TI - Bifurcation condition for optimal sets of the average distance functional JO - Nanosistemy: fizika, himiâ, matematika PY - 2011 SP - 51 EP - 60 VL - 2 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NANO_2011_2_4_a3/ LA - en ID - NANO_2011_2_4_a3 ER -