XIV [Fourteen] European Young Geotechnical Engineer's Confefence 2001 Monastery"Sts.Cyricus and Julitta", Bulgaria, 15-19 September 2001,
, 2001, 390 p..
.
XIV [Fourteen] European Young Geotechnical Engineer's Confefence 2001 Monastery"Sts.Cyricus and Julitta", Bulgaria, 15-19 September 2001.
Sofia: , 2001, 390 p..
(2001)
XIV [Fourteen] European Young Geotechnical Engineer's Confefence 2001 Monastery"Sts.Cyricus and Julitta", Bulgaria, 15-19 September 2001,
Sofia: , 390 p.