@PhDthesis{Bittencourt:12a,
    author = "Carvalho Bittencourt, Andr{\'{e}}",
    title = "On Modeling and Diagnosis of Friction and Wear in Industrial Robots",
    school = "{Department of Electrical Engineering}, {L}ink{\"{o}}ping {U}niversity",
    year = "2012",
    month = Jan,
    address = "SE-581 83 Linköping, Sweden",
    type = "Licentiate Thesis no. 1516",
}