Jochen Fink Renato Luís Garrido Cavalcante Slawomir Stanczak Multi-Group Multicast Beamforming by Superiorized Projections Onto Convex Sets. 5708-5722 2021 69 IEEE Trans. Signal Process. https://doi.org/10.1109/TSP.2021.3117513 db/journals/tsp/tsp69.html#FinkCS21
