1. Sensitized Fluorescence of Metal Vapor Mixtures, Ed. by E.K. Kraulinya (P. Stuchka Latvian State University, Riga, 1968), vol. 1 [in Russian].
2. Sensitized Fluorescence of Metal Vapor Mixtures, Ed. by E.K. Kraulinya (P. Stuchka Latvian State University, Riga, 1969), vol. 2 [in Russian].
3. Collisional and Radiative Processes Involving Excited Particles, Ed. by E.K. Kraulinya (P. Stuchka Latvian State University, Riga, 1987) [in Russian].
4. L. Krause, “Collisional excitation transfer between the 2P1/2 and 2P3/2 levels in alkali atoms,” Appl. Opt. 5 (9), 1375–1382 (1966).
5. J. Pitre and L. Krause, “Sensitized fluorescence in vapors of alkali metals: IX. Energy transfer in collisions between sodium and inert gas atoms,” Can. J. Phys. 45 (8), 2671–2681 (1967).