@article{TMF_1977_30_3_a9,
     author = {A. I. Ivanov and O. A. Ponomarev},
     title = {Investigation of the {Fr\"ohlich} model by the method of functional derivatives},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {382--394},
     year = {1977},
     volume = {30},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1977_30_3_a9/}
}