Avrutin, E.A.: 'Analysis of spontaneous emission and noise in self-pulsing laser diodes', IEE Proceedings J (Optoelectronics), 1993, 140, (1), p. 16-20, DOI: 10.1049/ip-j.1993.0003
IET Digital Library, https://digital-library.theiet.org/;jsessionid=el0plkrwcy25.x-iet-live-01content/journals/10.1049/ip-j.1993.0003