Alonso Ramirez-Manzanares Mariano Rivera Pierre Kornprobst François Lauze A Variational Approach for Multi-valued Velocity Field Estimation in Transparent Sequences. 227-238 2007 conf/scalespace/2007 SSVM http://dx.doi.org/10.1007/978-3-540-72823-8_20 db/conf/scalespace/ssvm2007.html#Ramirez-ManzanaresRKL07