@article {Dupak_JMO_1999, title = {Elektronov{\'e} d{\v e}lo pro sva{\v r}ov{\'a}n{\'\i} v p{\v r}{\'\i}strojov{\'e} technice}, journal = {Jemn{\'a} mechanika a~optika}, volume = {ro{\v c}. 44}, number = {{\v c}.~7{\textendash}8}, year = {1999}, pages = {239{\textendash}241}, issn = {0447-6441}, author = {Dup{\'a}k, Jan and Ivan Vl{\v c}ek} }