Authors: Jan Zalasiewicz; Mark Williams; Richard Fortey; Alan Smith; Tiffany L Barry; Angela L Coe; Paul R Bown; Peter F Rawson; Andrew Gale; Philip Gibbard; F John Gregory; Mark W Hounslow; Andrew C Kerr; Paul Pearson; Robert Knox; John Powell; Colin Waters; John Marshall; Michael Oates; Philip Stone Journal: Philos Trans A Math Phys Eng Sci Date: 2011-03-13 Impact factor: 4.226
Authors: Anthony D Barnosky; Nicholas Matzke; Susumu Tomiya; Guinevere O U Wogan; Brian Swartz; Tiago B Quental; Charles Marshall; Jenny L McGuire; Emily L Lindsey; Kaitlin C Maguire; Ben Mersey; Elizabeth A Ferrer Journal: Nature Date: 2011-03-03 Impact factor: 49.962