Who formulated the following model for estimating the market price of equity share?
$$P = \frac{{D + \frac{{{R_A}}}{{{R_C}}}\left( {E - D} \right)}}{{{R_C}}}$$
Where,
P = Market price of equity share
D = DPS
E = EPS
E - D = Retained earnings per share
R_A = Internal rate of return on investment
R_C = Cost of capital