Equation

Horizontal asymptote

Vertical asymptote

(30)

${\sigma }_{M_{ef}}={\sigma }_{M0}$

$N=N_0\exp \left(\frac{{\delta }_1{R}_{ef}}{1-R_{ef}}\right)$

(31)

$\Delta {\sigma }_{ef}={\sigma }_{M0}\left(1-R_{ef}\right)$

$N=N_0\exp \left(\frac{{\delta }_1{R}_{ef}}{1-R_{ef}}\right)$

(32)

$\Delta {\sigma }_{ef}=0$

$N=N_0\exp \left(\frac{{\beta }_1}{\frac{{\sigma }_{M_{ef}}}{{\sigma }_{M0}}-1}-{\delta }_1\right)$