Formula for doping and Temperature-dependent mobility model

In the Material database, the T and doping dependent mobility model. The parameters are

mu_max_n, mu_min_n, N_g_n, gamma_n, alpha_n, beta_n, mu_max_p, mu_min_p, N_g_p, gamma_p, alpha_p, beta_p

which are

$\mu_{n,max}, ~\mu_{n,min}, ~N_{g}, ~ \gamma_{n},~ \alpha_{n},~ \beta_{n}, ~ \mu_{p,max}, ~\mu_{p,min}, ~N_{g}, ~ \gamma_{p},~ \alpha_{p},~ \beta_{p}$