MBE growth and characterization of 'DELTA'-doping in 'GA''AS' and 'GA''AS' / 'SI' - Basmaji, Pierre; Ceschin, A. M.; Siu Li, Máximo; Hipólito, Oscar; Bernussi, A. A.; Iikawa, F.; Motisuke, P. (Conference on Superlattices, Quantum Wells, and Mbe Technology, 1989)