www.linkedin.com/in/jgzheng researchgate.net/Jack_Zheng3 twitter.com/jgzheng cubicle-h.blogspot.com cubicleh.wordpress.com edocr.com/user/jgzheng
slideshare.net/jgzheng
youtube.com/user/wenyizheng
www.diigo.com/user/jgzheng