Stiller, H. XVIII Leeds 1982, ESC Proceedings, External Organizations;
http://bib.gfz-potsdam.de/pub/esc/esc-18-2-ocr.pdf (Any fulltext)
http://bib.gfz-potsdam.de/pub/esc/esc-18-2.pdf (Any fulltext)
Stiller, H. (Ed.)(1983): XVIIIth General Assembly of the European Seismological Commission (Volume 2): Leeds, August 23rd - 27th, 1982, (ESC-Proceedings ; 18.2), Potsdam, 227-461 p.