Koynov, K. MPI for Polymer Research, Max Planck Society;
Ivanov, R., Koynov, K., & Saltiel, S. (2004). Double phase-matched cascaded fifth harmonic generation in single nonlinear medium by focussed laser beam. Applied Physics B: Lasers and Optics, 78(1), 87-92. doi:10.1007/s00340-003-1313-5.