@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}
}