Comparison of methods for solving the Schrödinger equation for multiquantum well heterostructure applicationsUdal, Andres; Reeder, Reeno; Velmre, Enn; Harrison, PaulProceedings of the Estonian Academy of Sciences. Engineering = Eesti Teaduste Akadeemia toimetised. Tehnikateadused2006 / p. 246-261 : ill https://www.ester.ee/record=b1072102*est

Comparison of photon recycling effect in GaAs and GaN structuresVelmre, Enn; Udal, AndresProceedings of the Estonian Academy of Sciences. Engineering = Eesti Teaduste Akadeemia toimetised. Tehnikateadused2004 / p. 157-172