Federico Pederzolli Domenico Siracusa José Manuel Rivas-Moscoso Mohammad Behnam Shariati Elio Salvadori Ioannis Tomkos Spatial group sharing for SDM optical networks with Joint Switching. 1-6 2016 ONDM https://doi.org/10.1109/ONDM.2016.7494084 conf/ondm/2016 db/conf/ondm/ondm2016.html#PederzolliSRSST16