@Article{bgd-4-455-2007,
AUTHOR = {Dartnell, L. R. and Desorgher, L. and Ward, J. M. and Coates, A. J.},
TITLE = {Martian sub-surface ionising radiation:  biosignatures and geology},
JOURNAL = {Biogeosciences Discussions},
VOLUME = {4},
YEAR = {2007},
NUMBER = {1},
PAGES = {455--492},
URL = {http://www.biogeosciences-discuss.net/4/455/2007/},
ISSN = {1810-6277}
}