[Society of Exploration Geophysicists and Brazilian Geophysical Society 13th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 26-29 August 2013 - Rio de Janeiro, Brazil (26 August to 29 August)] 13th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 26–29 August 2013 - Separation of Reflection from Diffraction Events via the CRS Technique and a Blind Source Separation Method based on Sparsity Maximization