Plaksa, S. A., and V. S. Shpakovskii. 2010. “Constructive Description of Monogenic Functions in a Harmonic Algebra of the Third Rank”. Ukrains’kyi Matematychnyi Zhurnal 62 (8), 1078–1091. https://umj.imath.kiev.ua/index.php/umj/article/view/2938.