@conference {Koleva_EBT_2009, title = {Quality Characterization of Electron Beams}, booktitle = {Proceedings of the 9th International Conference on Electron Beam Technologies}, year = {2009}, pages = {64{\textendash}69}, publisher = {Bulgarian Academy of Sciencies}, organization = {Bulgarian Academy of Sciencies}, address = {Varna}, issn = {0861-4717}, author = {Elena Koleva and Georgy Mladenov and K. Garkova and M. Kardjiev}, editor = {Georgy Mladenov} }