@article{TMF_1993_95_2_a2,
     author = {C. Bachas},
     title = {On the breakdown of perturbation theory},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {187--196},
     publisher = {mathdoc},
     volume = {95},
     number = {2},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_95_2_a2/}
}