Petr Sperka
发表
Karsten Stahl,
Martin Ebner,
Bernd-Robert Hoehn,
2018
.
Martin Hartl,
Ivan Křupka,
Petr Sperka,
2017
.
Martin Hartl,
Ivan Krupka,
Petr Sperka,
2018,
Lubricants.
Martin Hartl,
Ivan Krupka,
Milan Omasta,
2018
.
Martin Hartl,
Petr Svoboda,
David Kostal,
2017
.
Martin Hartl,
Ivan Křupka,
Petr Sperka,
2010
.
Motohiro Kaneta,
Martin Hartl,
Ivan Krupka,
2017
.
Martin Hartl,
David Kostal,
Ivan Krupka,
2015
.