7Goodwin, J.A., Brian, D.G.. Cafeteria-style grading in general chemistry[J3. Journal of Chemical Education, 2001, 78(4): 491-493.
8Belletti, A., Borromei, R., Ingletto, G. Teaching physical chemistry experiments with a computer simulation by LabVIEW[J]. Journal of Chemical Education, 2006, 83 (9): 1353-1355.