Optical Networking Gym: an open-source toolkit for resource assignment problems in optical networks - Natalino, Carlos; Magalhaes, Talles; Arpanaei, Farhad; Lobato, Fabricio R.l.; Costa, Joao C.w.a.; Hernandez Gutierrez, Jose Alberto; Monti, Paolo (Journal of Optical Communications and Networking, 2024)