Characteristic Values and Associated Solutions of Mathieu's Differential Equation (Algorithm 352 [S22]) CACM July, 1969 Clemm, D. S. Mathieu's differential equation, Mathieu function, characteristic value, periodic solution, radial solution 5.12 CA690714 JB February 15, 1978 6:30 PM 1866 5 1866 1866 5 1866 1866 5 1866