Earthquake Data in Engineering Seismology : Predictive Models, Data Management and Networks / edited by Sinan Akkar, Polat Gülkan, Torild van Eck., 2011 r=on-line (Введено оглавление). - Текст : электронный.
Seismotectonics and seismic hazard in the Roer Valley Graben;with emphasis on the Roermond earthquake of April 13,1992 : Workshop"The Roermond earthquake of Apr.13,1992",Jan.20-22,1993,Veldhoven / Ed.: T.van Eck, C. A. Davenport, 1995. - 91-441 p. p. - Текст : непосредственный.