Theoretical and experimental studies of dielectric two-dimensional Bragg structures for development of spatially-extended heterolasersN.Yu. Peskov, V.R. Baryshev, N.S. Ginzburg, E.R. Kocharovskaya, A.M. Malkin, D.M. Padozhnikov, M.D. Proyavin and V.Yu. ZaslavskyEPJ Web Conf., 195 (2018) 02012DOI: https://doi.org/10.1051/epjconf/201819502012