@article{ZNSL_1997_237_a7,
     author = {E. G. Emel'yanov and G. V. Kuz'mina},
     title = {Theorems on the extremal decomposition in the family of systems of domains of various types},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {74--104},
     year = {1997},
     volume = {237},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_237_a7/}
}