From concrete to abstract?: problem domain in the learning of introductory programming. - Osvaldo Luiz Oliveira; Ana María Monteiro; Norton Trevisan Roman (ITiCSE, 2011)

Natural language in introductory programming: an experimental study. - Osvaldo Luiz Oliveira; Ana María Monteiro; Norton Trevisan Roman (ITiCSE, 2011)

Statistical evidence of the correlation between mental ability to compute and student performance in undergraduate courses. - Osvaldo Luiz Oliveira (ITiCSE, 2012)

Can natural language be utilized in the learning of programming fundamentals? - Osvaldo Luiz Oliveira; Ana María Monteiro; Norton Trevisan Roman (FIE, 2013)

Programming fundamentals and human factors: an empirical study of three variables. - Osvaldo Luiz Oliveira; Ana María Monteiro; Norton Trevisan Roman (Braz. J. Inf. Syst., 2015)