• Black-box assessment of optical spectrum servicesKaeval, Kaida; Elbers, Jörg-Peter; Grobe, Klaus; Tikas, Marko; Fehenberger, Tobias; Griesser, Helmut; Jervan, Gert2021 Optical Fiber Communications Conference and Exhibition (OFC) : 6-10 June 2021 : San Francisco, CA, USA2021 / 3 p https://ieeexplore.ieee.org/document/9489700