Division Problem and Partial Differential Equations with Constant Coefficients in Colombeau's Space of New Generalized Functions. M. Nedeljkov; S. Pilipovic; D. Scarpalezos — 1996 Monatshefte für Mathematik
Differential operators with generalized constant coefficients. Pilipović, S.; Scarpalézos, D. — 1996 Portugaliae Mathematica