1. Brackx, F., Delanghe, R., Sommen, F.: Clifford Analysis. Research Notes in Mathematics, vol. 76. Pitman Advanced Publishing, Boston (1982)
2. Delanghe, R., Sommen, F., Souc̆ek, V.: Clifford Algebras and Spinor-Valued Functions. A Function Theory for the Dirac Operator. Mathematics and its Applications, vol. 53. Kluwer Academic Publishers, Dordrecht (1992)
3. De Bie, H., Somberg, P., Souček, V.: The metaplectic Howe duality and polynomial solutions for the symplectic Dirac operator. J. Geom. Phys. 75, 120–128 (2014)
4. Dimovski, I.H., Kiryakova, V.S.: Convolution and differential property of Borel-Dzhrbashyan transformation. In: Complex Analysis and Applications, Proceedings of International Conferences, Varna/Bulg, 1981, pp. 148–156 (1984)
5. Dimovski, I.H., Kiryakova, V.S.: Convolution and commutant of Gelfond-Leontiev operator of integration. In: Constructive Function Theory, Proceedings of International Conferences, Varna/Bulg, 1981, pp. 288–294 (1983)