1. State of the Art of Current Practices for Transit Transfers;Charles River Associates,1981
2. Guidelines for allocating public transportation costs among towns in nonurbanized areas;Collura;Transpn. Res. Rec.,1981
3. The Economics of Local Public Service Consolidation;Cowing,1976
4. Federation of transit agencies as a solution for service integration;Homburger;Traff. Q.,1970