Čiegis, R., and M. Radziunas. “Effective Numerical Integration of Traveling Wave Model for edge‐emitting broad‐area Semiconductor Lasers and Amplifiers”. Mathematical Modelling and Analysis, vol. 15, no. 4, Nov. 2010, pp. 409-30, doi:10.3846/1392-6292.2010.15.409-430.