by Yu, K.C., Williams, K., Neafus, D., Gaston, L., Downing, G.
Published in International journal of digital earth (01.03.2009)

by Wilke, B., Metzgar, J., Johnson, K., Semwal, S., Snyder, B., KaChun Yu, Neafus, D.
Published in 2009 IEEE Virtual Reality Conference (01.03.2009)