Too Sick to Start: Entrepreneur's Health and Business Entry in Townships around Durban, South Africa
Li-Wei Chao, Helena Szrek, Nuno Sousa Pereira, Mark Pauly
Journal of Developmental Entrepreneurship, vol. 15, 2010, p. 231-242.

Time Preference and Its Relationship with Age, Health, and Survival Probability
Li-Wei Chao, Helena Szrek, Nuno Sousa Pereira, Mark Pauly
Judgment And Decision Making, vol. 4, 2009, p. 1-19.

Measuring the Effects of Work Loss on Productivity with Team Production
Sean Nicholson, Mark Pauly, Daniel Polsky, Claire Sharda, Helena Szrek, Marc Berger
Health Economics, vol. 15, 2006, p. 111-123.