Andreescu, Titu. Geometric problems on maxima and minima / by Titu Andreescu, Oleg Mushkarov and Luchezar Stoyanov - New Delhi: Springer Pvt. Ltd., 2006. - ix, 264p. ISBN: 9788184898866 Subjects--Topical Terms: CalculusGeometric extremaMathPartial variation Dewey Class. No.: 511.66 / AND/G