M. Carlin, P. Rocca, G. Oliveri, F. Viani and A. Massa, “Directions-of-Arrival Estimation Through Bayesian Compressive Sensing Strategies,” in IEEE Transactions on Antennas and Propagation, vol. 61, no. 7, pp. 3828-3838, July 2013, doi: 10.1109/TAP.2013.2256093.