@book{gledocs_11858_00-1735-0000-0001-31F1-2,
author = {Zöller, Gert},
title = {Critical states of seismicity},
year = {2006},
publisher = {Univ. Potsdam},

note = { \url {http://hdl.handle.net/11858/00-1735-0000-0001-31F1-2}},
}