Collins, A.Zalasiewicz, J.2007-08-272007-08-272001New scientist (1971), 2001; 10 Feb(2277):42-450262-4079http://hdl.handle.net/2440/37422enJournal article00200710380001668913000292-s2.0-3374882540348672Collins, A. [0000-0002-3408-5474]