Szypuła J., 1980. Assessment of the effect of environmental factors on fish growth using growth coefficients calculated from mathematical description of fish growth by means of polynomials. Acta Ichthyol. Piscat. 10 (1): 3-24.

The paper describes a method for a mathematical characterisation of fish growth with the use of non-asymptotic growth models (bi- and trinomials). The method allows to obtain results equally accurate as when von Bertalanffy′s equation is used; additionally, a new version of growth coefficient is possible to calculate. The coefficient can be applied to a precise determination of effects of various environmental factors on fish growth. If the relationship between the growth coefficient and a given factor′s effect is presented as a linear correlation, the regression equation slope coefficient may be taken as representing the intensity of the factor′s effect on growth.