  In this article, we investigate partial integrals and partial derivatives of
bivariate fractal interpolation functions. We prove also that the mixed
Riemann-Liouville fractional integral and derivative of order $\gamma = (p, q);
p > 0,q > 0$, of bivariate fractal interpolation functions are again bivariate
interpolation functions corresponding to some iterated function system (IFS).
Furthermore, we discuss the integral transforms and fractional order integral
transforms of the bivariate fractal interpolation functions.
