Archived from the original on 17 July 2013. ↑ Stacy L. DeRuiter; Brandon L. Southall; John Calambokidis; Walter M. X. Zimmer; Dinara Sadykova; Erin A. Falcone; Ari S. Friedlaender; John E. Joseph; David Moretti; Gregory S. Schorr; Len Thomas; Peter L. Tyack (2013).