Pamela Samuelson. Legally speaking - When is a license really a sale?. Communications of the ACM, 52(3):27-29, 2009. [doi]
@article{Samuelson09,
title = {Legally speaking - When is a license really a sale?},
author = {Pamela Samuelson},
year = {2009},
doi = {10.1145/1467247.1467258},
url = {http://doi.acm.org/10.1145/1467247.1467258},
researchr = {https://researchr.org/publication/Samuelson09},
cites = {0},
citedby = {0},
journal = {Communications of the ACM},
volume = {52},
number = {3},
pages = {27-29},
}