Jun Xian Yongjin Li Wei Lin Reconstruction of Signal from Samples of Its Integral in Spline Subspaces. 574-577 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3037&spage=574 2004 conf/iccS/2004-2 International Conference on Computational Science db/conf/iccS/iccS2004-2.html#XianLL04a