Svetlana N. Khonina,
Mikhail S. Kirilenko,
and
Valery V. Pribylov,
"Investigation of the Free-space Propagation Operator Eigenfunctions in the Near-field Diffraction," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9,Page(s)2035-2038