2 citations to https://www.mathnet.ru/rus/rm1600
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Д. В. Аносов, В. П. Лексин, “Андрей Андреевич Болибрух в жизни и науке (30.01.1950 – 11.11.2003)”, УМН, 59:6(360) (2004), 3–22 ; D. V. Anosov, V. P. Leksin, “Andrei Andreevich Bolibrukh in life and science (30 January 1950 – 11 November 2003)”, Russian Math. Surveys, 59:6 (2004), 1009–1028
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Ehlers, J, “The theory of caustics and wave front singularities with physical applications”, Journal of Mathematical Physics, 41:6 (2000), 3344