@article{TMF_1998_116_3_a7,
     author = {G. I. Kalmykov},
     title = {Estimating the convergence radius of {Mayer} expansions: {The} nonnegative potential case},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {417--430},
     year = {1998},
     volume = {116},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_116_3_a7/}
}