Nai-peng Hu Jin-xin Tian Evaluation of the Growth of Real Estate Financial System Based on BP Neural Network. 49-56 2007 conf/isnn/2007-3 ISNN (3) http://dx.doi.org/10.1007/978-3-540-72395-0_7 db/conf/isnn/isnn2007-3.html#HuT07