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In the present publication a relationship is applied to the distributions of life spans of animals, which originally had been found by the authors when studying a quite different problem. The new formula is far simpler and its derivation is more evident than the formulas earlier proposed by GOMPERTZ, MAKEHAM or PERKS  1 . Moreover all statistical data taken from literature fit our equation better than any other one.

zeitschrift für naturforschung b

Über die Verteilung der Lebensdauer in biologischen Kollektiven: Eine Methode zur Auswertung von Versuchen, in deren Verlauf die Lebensdauer von biologischen Kollektiven durch Bestrahlung oder durch Eingabe von Drogen beeinflußt wird