**Model** |
**Mathematical Function** |
**Ref.** |
Wang and Singh |
MR = at^{2} + bt + c |
[8] |
Henderson and Pabis |
MR = a exp(−kt ) |
[9] |
Logaritmic |
MR = a exp(−kt ) + c |
[10] |
Modified Page |
MR = exp(−(kt )^{n} ) |
[11] |
Approximation of diffusion |
MR = a exp(−kt ) + (1− a)exp(−kbt ) |
[12] |
page |
MR = exp(−kt^{n}) |
[8] |
Modified Henderson and Pabis |
MR = a exp(−kt ) + bexp(−gt ) + cexp(−ht ) |
[13] |
Newton |
MR = exp(−kt ) |
[8] |
Midili et al. |
MR = a exp(−kt^{n} ) + bt |
[8] |
a, b, c, k and n are constant of models. |