@article{ZNSL_2001_276_a6,
     author = {E. G. Emel'yanov},
     title = {Conformal invariant functionals on the {Riemann} sphere},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {134--154},
     year = {2001},
     volume = {276},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2001_276_a6/}
}