@article{TM_1975_135_a12,
     author = {O. I. Zavialov},
     title = {Renormalization and indefinite metric},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {120--126},
     year = {1975},
     volume = {135},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_1975_135_a12/}
}