LEDEN, Lars. Nya principer för trafikplanering . Socialmedicinsk tidskrift, [S. l.], v. 60, n. 8-9, p. 481, 1983. DOI: 10.62607/smt.v60i8-9.58983. Disponível em: https://publicera.kb.se/smt/article/view/58983. Acesso em: 10 dec. 2025.