"Why fewer COEs mean luxury car boom", Straits Times, February 3, 2011.

"GE 2011: The geographic effect", Straits Times, May 11, 2011.

• Data

• Estimates

"Ministerial Salaries -- Can Economics Explain?", Online Citizen, August 29, 2011.

"Road to personal data protection", Straits Times, September 17, 2011.

"People drive more when COE prices rise", Straits Times, August 2, 2012

"Extend Singapore laws to haze culprits", Straits Times, September 29, 2012.