@article{Aleksandrovich_Sidorov_2019, title={Differential operators specifying the solution of an elliptictype iterated equation}, volume={71}, url={http://umj.imath.kiev.ua/index.php/umj/article/view/1449}, abstractNote={We construct differential operators that transform arbitrary holomorphic functions into regular solutions of elliptic-type
equations of the second and higher orders. The Riquier problem is solved for the elliptic-type equation of the fourth order.}, number={3}, journal={Ukrainsâ€™kyi Matematychnyi Zhurnal}, author={Aleksandrovich, I. N. and Sidorov, M. V.}, year={2019}, month={Mar.}, pages={433-440} }