Morris Marden, Logarithmic Derivative of an Entire Function, Proceedings of the American Mathematical Society, Vol. 28, No. 2 (May, 1971), pp. 513-518 ...

A. M. WINSLOW, A SIMPLIFIED METHOD OF DIFFERENTIATING AND EVALUATING FUNCTIONS REPRESENTED BY FOURIER SERIES, Quarterly of Applied Mathematics, Vol. 7, No. 4 (JANUARY, 1950), pp. 423-425 ...