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Příklady označené

jsou podle Frank S. Budnick : " Applied Mathematics for busines, economics, and the social Sciences ", McGraw-Hill KOGAKUSHA, LTD., Tokyo 1979

jsou podle G. Eason, C.W. Coles, G. Gettingby : " Mathematics and Statistics for the Bio-Sciences", Ellis Horwood Series in Mathematics & its Applications, Ellis Horwood Limited Publishers, Chichester 1980

jsou podle R. Fraga : "Calculus Problems for a mew century", Volume 2, Resources for Calculus, MAA Notes Number 28, The Mathematical Association of America , 1993

jsou podle Donald J. Newman : " A problem seminar", (Problem books in mathematics), 1982 Springer-Verlag New York