KRÁSA, J., LÁSKA, L., ROHLENA, K., PFEIFER, M., SKÁLA, J., KRÁLIKOVÁ, B., WORYNA, E., WOLOWSKI, J., PARYS, P. Nonlinear effect of a laser beam position on ion generation by lasers. In: PISARCZYK, P., PISARCZYK, T., WOLOWSKI, J., eds. International Conference on Phenomena in Ionized Gases. Proceedings. Vol. 2. Warsaw: Polish Academy of Science, 1999, s. 103-104.