The Mysteries of Mammatus Clouds: Observations and Formation Mechanisms Schultz, David M. ; Kanak, Katharine M. ; Straka, Jerry M. ; Trapp, Robert J. ; Gordon, Brent A. ; Zrnić, Dusan S. ; Bryan, George H. ; Durant, Adam J. ; Garrett, Timothy J. ; Klein, Petra M. ; Lilly, Douglas K. Abstract Publication: Journal of the Atmospheric Sciences Pub Date: October 2006 DOI: 10.1175/JAS3758.1 Bibcode: 2006JAtS...63.2409S