Workshop on Recent Trends in Complex Methods for Partial Differential Equations, Ankara, Türkiye, 6 - 10 Temmuz 1998, cilt.6, ss.29-40, (Tam Metin Bildiri)
The solutions of complex partial differential equations of order four are obtained by using polynomial differential operators. A correspondence principle is also derived for the solutions of two different differential equations, imposing conditions on the coefficients.