@misc{vinicius2016a,
  title = {Numerical Estimation of Frictional Effects in Equal Channel Angular Extrusion},
  author = {Vinicius Aguiar de Souza, Ikumu Watanabe, Akira Yanagida},
  publisher = {Japan Institute of Metals},
  year = {2016-06-23},
  keywords = {equal channel angular extrusion, finite element analysis, friction model}
}