Isham, B., Hagfors, T., Khudukon, B., Yurik, R. Y., Tereshchenko, E. D., Rietveld, M. T., et al. (2005). An interferometer experiment to explore the aspect angle dependence of stimulated electromagnetic emission spectra. Annales Geophysicae, 23(1), 55-74. doi:10.5194/angeo-23-55-2005.