Annamaria Mazzia Giorgio Pini Mario Putti Flavio Sartoretto Comparison of 3D Flow Fields Arising in Mixed and Standard Unstructured Finite Elements. 560-567 2003 conf/iccS/2003-1 International Conference on Computational Science http://link.springer.de/link/service/series/0558/bibs/2657/26570560.htm db/conf/iccS/iccS2003-1.html#MazziaPPS03