Xiyuan Chen Deformation Measurement of the Large Flexible Surface by Improved RBFNN Algorithm and BPNN Algorithm. 41-48 2007 conf/isnn/2007-3 ISNN (3) http://dx.doi.org/10.1007/978-3-540-72395-0_6 db/conf/isnn/isnn2007-3.html#Chen07