@article {pettit2011crossover, title = {The crossover stress, anisotropy and the ice flow law at Siple Dome, West Antarctica}, journal = {Journal of Glaciology}, volume = {57}, number = {201}, year = {2011}, pages = {39{\textendash}52}, publisher = {International Glaciological Society}, author = {Erin C Pettit and Waddington, Edwin D and Harrison, William D and Thorsteinsson, Throstur and Elsberg, Daniel and Morack, John and Zumberge, Mark A} }