1. Competition between minibuses and regular bus services;Bly;J. Transport Econ. Policy,1986
2. An analytic assessment of subsidies to bus services;Bly;Transpn. Sci.,1986
3. Tables of operating costs 1981/2,1982
4. The Strategic Model: The main relationships;Frerk,1983
5. Competition on an urban bus route;Glaister;J. Transport Econ. Policy,1985