We have reserved a special issue of Complex Analysis and Operator Theory for the publication in 2020 of fully refereed proceedings of the workshop. The editors of the proceedings will be Serap Öztop, H. Turgay Kaptanoğlu, and Aurelian Gheondea. If you delivered a talk at the workshop, we invite you to submit a manuscript to this proceedings. The proceedings will publish original research articles, and all manuscripts will be carefully peer-reviewed following the editorial policy and quality of the journal. If you accept this invitation, please e-mail a message expressing your will to contribute to the proceedings to H. Turgay Kaptanoğlu ( kaptan at fen dot bilkent dot edu dot tr ) no later than 30 September 2019.