@article{MZM_1974_16_5_a3,
     author = {S. Ya. Khavinson},
     title = {Representation of extremal functions in the classes $E_q$ in terms of {Green's} and {Neumann's} functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {707--716},
     publisher = {mathdoc},
     volume = {16},
     number = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_5_a3/}
}