Swait, Joffre; Eskeland, Gunnar S. <br/><br/>
Travel mode substitution in Sao Paulo: Estimates for air pollution. 

 - Washington :  World Bank,  1995. 
<br/><br/> Policy Research Working Paper No.1437. 
<br/><br/> The paper uses cross-sectional variation from an urban travel survey to study the substitutability in demand between travel modes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution Control.<br/>Sao Paulo -- Transport.--Sao Paulo -- Transport.