@article{ refId, author = {{Keppler, Hans}}, encoding = {tex}, title = {Plate tectonics: why only on Earth?}, DOI= "10.1051/epn/2009604", url= "http://dx.doi.org/10.1051/epn/2009604", journal = {Europhysics News}, year = 2009, volume = 40, number = 4, pages = "27-30", month = "", }