1. Bronson, R., Naadimuthu, G.: Schaum’s Outline of Operations Research, 2nd edn. McGraw-Hill, New York (1997)
2. Grinstead, C.M., Snell, J.L.: Introduction to probability. American Mathematical Society, Providence (1997)
3. Heileman, G.L., Babbitt, T.H., Abdallah, C.T.: Visualizing student flows: busting myths about student movement and success, change. Mag. High. Learn. 47(3), 30–39 (2015)
4. ISCED: International Standard Classification of Education. UNESCO Institute for Statistics, Montreal, Quebec, Canada (2011)
5. Junior, P.L., Silveira, F.L., Ostermann, F.: Survival analysis applied to student ow in undergraduate physics courses: an example from a Brazilian university. Revista Brasileira de Ensino de Física 34(1), 1403 (2012)