@article{TMF_1993_95_1_a13,
     author = {S. S. Safin and R. A. Sharipov},
     title = {B\"acklund autotransformation for the equation $u_{xt}=e^u-e^{-2u}$},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {146--159},
     publisher = {mathdoc},
     volume = {95},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_95_1_a13/}
}