TY - JOUR AU - A. V. Penskoi TI - Extremal metrics for eigenvalues of the Laplace--Beltrami operator on surfaces JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2013 SP - 1073 EP - 1130 VL - 68 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_2013_68_6_a2/ LA - en ID - RM_2013_68_6_a2 ER -