Weyers, J. (1979). Quarks, hadron spectroscopy and beyond. In Levy, M.; Basdevant, J.-L.; Speiser, D.; Weyers, J.; Gastmans, R.; Zinn-Justin, J.; (ed.), Cargese Summer Institute 1977 on Hadronic Structure and Lepton-HadronInteractions (p. p. 271-319). Plenum. https://hdl.handle.net/2078.5/231040