5 Reference

Breusch, Trevor S, and Adrian R Pagan. 1979. “A Simple Test for Heteroscedasticity and Random Coefficient Variation.” Econometrica: Journal of the Econometric Society, 1287–94.

Gujarati, Damodar N, and Dawn C Porter. 2011. Econometria Básica. 5th ed. Editora Campus, Rio de Janeiro: Elsevier.

Ramsey, James Bernard. 1969. “Tests for Specification Errors in Classical Linear Least-Squares Regression Analysis.” Journal of the Royal Statistical Society. Series B (Methodological), 350–71.