@article { fremensan2012, author = "Freitas, Elisabete F. and Mendonça, Catarina and Santos, Jorge A. and Murteira, Carla and Ferreira, João Amaro Oliveira", title = "Traf?c noise abatement: how different pavements, vehicle speeds and traf?c densities affect annoyance levels", year = "2012" }