The authors thank

The authors thank for efficient help to all who contributed towards the creation of this text. Particularly including the gentlemen (in the alphabetical order):

Manfred Grün, Hans Hintennach, Jan Jareš, Martin Kröner, František Lego, Jaroslav Leimer, Karel Loprais, Jan Neumann, Emil Příhoda, Bohuš Pelikán, Karel Rosenkranz, Klaus Teubner and Miroslav Zikmund.

Special thanks to the team of Mr.Russell Brown from Eberspacher
(UK) Ltd. for reviewing the English version of the text.