Abstract
Two-dimensional quadrature formulas with a minimal number of points are applied to the computation of the double radial integral in the finite-range distorted-wave Born approximation for nuclear reactions. The resulting code kundry is fast, especially in cluster transfer reactions where the integrated area is largest. The code was used to investigate the reaction B11(O16, N15)C12 and the coherent interference between the proton and alpha-cluster transfer reaction mechanisms.