@article{ZNSL_1985_146_a9,
     author = {I. M. Khamitov},
     title = {A constructive approach to the quantum $(ch\varphi)_2$-model. {I.} {The} {Gelfand{\textendash}Levitan{\textendash}Marcfaenko} equations.method},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {147--190},
     year = {1985},
     volume = {146},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_146_a9/}
}