Dale Shaffer. Using abstraction barriers to motivate the teaching of object-oriented concepts. J. Comput. Sci. Coll., 18(2):290-294, 2002. [doi]
@article{Shaffer02,
title = {Using abstraction barriers to motivate the teaching of object-oriented concepts},
author = {Dale Shaffer},
year = {2002},
url = {https://dl.acm.org/doi/10.5555/771322.771363},
researchr = {https://researchr.org/publication/Shaffer02},
cites = {0},
citedby = {0},
journal = {J. Comput. Sci. Coll.},
volume = {18},
number = {2},
pages = {290-294},
}