author = "de Figueiredo, Alice Herrera and Celes, Waldemar",
          affiliation = "{Instituto Tecgraf/PUC-Rio} and {Instituto Tecgraf/PUC-Rio}",
                title = "Detec{\c{c}}{\~a}o de colis{\~a}o para simula{\c{c}}{\~a}o 
                         entre part{\'{\i}}culas representadas como superelipses",
            booktitle = "Proceedings...",
                 year = "2015",
               editor = "Vieira, Thales Miranda de Almeida and Mello, Vinicius Moreira",
         organization = "Conference on Graphics, Patterns and Images, 28. (SIBGRAPI)",
            publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
              address = "Porto Alegre",
             keywords = "superelipses, quadtree, simula{\c{c}}{\~a}o f{\'{\i}}sica.",
             abstract = "This work explores the use of superellipses for representing 
                         various geometrical shapes of grains. A methodology is proposed 
                         for collision detection based on quadtrees and interval 
                         arithmetic. We also propose a projection method for handling 
                         collisions using relaxation for simulating particles of different 
  conference-location = "Salvador",
      conference-year = "Aug. 26-29, 2015",
             language = "pt",
                  ibi = "8JMKD3MGPBW34M/3JT4DHS",
                  url = "",
           targetfile = "AliceHerrera_SIBGRAPI2015.pdf",
        urlaccessdate = "2021, Dec. 07"