@article{RM_2013_68_6_a2,
     author = {A. V. Penskoi},
     title = {Extremal metrics for eigenvalues of the {Laplace--Beltrami} operator on surfaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1073--1130},
     publisher = {mathdoc},
     volume = {68},
     number = {6},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2013_68_6_a2/}
}