Impact of size upon lasing in ZnO microtetrapods. - Zalamai, V. V.; Ursaki, V. V.; Tiginyanu, I. M.; Burlacu, A.; Rusu, E. V.; Klingshirn, C.; Fallert, J.; Sartor, J.; Kalt, H. (Applied Physics B: Lasers & Optics, 2010)