@misc{_Trenchless,
 howpublished={online},
 publisher={Warsaw : Research Design and Realization of Ecology Infrastructure EKOLAND Sp. z o.o : International Society for Trenchless Technology},
 language={eng},
 type={conference papers},
 title={Trenchless Tech Warsaw'95 : International conference and exhibition, Warsaw 19-20 April 1995},
 keywords={trenchless technology, installation works},
}