Thomas, A.W.2014-10-232014-10-231981Journal of Physics G: Nuclear Physics, 1981; 7(12):L283-L2860305-4616http://hdl.handle.net/2440/86534By applying a unitary transformation to the Lagrangian density of the cloudy-bag model, the author obtains a generalisation of the Weinberg effective Lagrangian for pion-nucleon scattering. The new Lagrangian incorporates the Weinberg-Tomozawa result for s-wave pion scattering from any hadronic bag in a very simple but elegant fashion.en© 1981 The Institute of PhysicsJournal article003001039610.1088/0305-4616/7/12/004A1981MS283000042-s2.0-25944478068135718Thomas, A.W. [0000-0003-0026-499X]