Evgenii Menshikov, Paolo Franceschini, Kristina Frizyuk, Ivan Fernandez-Corbaton, Andrea Tognazzi, Alfonso C. Cino, Denis Garoli, Mihail Petrov, Domenico de Ceglia, Costantino De Angelis, "Vortex beam generation via total angular momentum addition in flat optical elements", Quantum Sensing and Nano Electronics and Photonics XXI, pp. 63, 2025, [DOI: 10.1117/12.3041594]