The study of a new family of phase masks for three-dimensional fluorescence nanoscopy Aleksei Gorshelev, Ivan Eremchev, Sergei Kulik, Andrei Naumov, Evgeniy Vorontsov, Vladimir Volostnikov and Svetlana Kotova EPJ Web Conf., 190 (2018) 04007 Published online: 26 September 2018 DOI: 10.1051/epjconf/201819004007