P1073 Translation of: Pochemu granit︠s︡a krugloĭ kapli prevrashchaetsi︠a︡ v inversnyĭ obraz ẹllipsa?.
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Why the boundary of a round drop becomes a curve of order four by A. N. Varchenko. ISBN 0821870025. Published by American Mathematical Society in 1992. Publication and catalogue information, links to buy online and reader comments.