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@article{Askar’yan:1970,
author = {G. A. Askar’yan and V. B. Studenov and I. L. Chistyi},
title = {Thermal Self-focusing in a Beam with Decreasing Intensity Near the Axis ("Banana" Self-focusing)},
publisher = {Physics-Uspekhi},
year = {1970},
journal = {Phys. Usp.},
volume = {13},
number = {2},
pages = {295-296},
url = {https://ufn.ru/en/articles/1970/2/m/},
doi = {10.1070/PU1970v013n02ABEH004241}
}
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