@article{DE_1977_13_8_a29,
     author = {\`E. S. Shpigelman},
     title = {Letter to the editors: {``The} boundedness of the infinitely continuable solutions of a system of two differential equations with quadratic right hand sides'' {(Differencial'nye} {Uravnenija} \textbf{11} (1975), no.~11, 2019--2026)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1537},
     publisher = {mathdoc},
     volume = {13},
     number = {8},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_8_a29/}
}