Judith L. Gersting. The Other Two Rs in the Discrete Mathematics Course. Computer Science Education, 1(4):293-298, 1990. [doi]
@article{Gersting90,
title = {The Other Two Rs in the Discrete Mathematics Course},
author = {Judith L. Gersting},
year = {1990},
doi = {10.1080/0899340900010403},
url = {http://dx.doi.org/10.1080/0899340900010403},
researchr = {https://researchr.org/publication/Gersting90},
cites = {0},
citedby = {0},
journal = {Computer Science Education},
volume = {1},
number = {4},
pages = {293-298},
}