Adam Janiak, Mikhail Y. Kovalyov, Maciej Lichtenstein. Strong NP-hardness of scheduling problems with learning or aging effect. Annals OR, 206(1):577-583, 2013. [doi]
@article{JaniakKL13,
title = {Strong NP-hardness of scheduling problems with learning or aging effect},
author = {Adam Janiak and Mikhail Y. Kovalyov and Maciej Lichtenstein},
year = {2013},
doi = {10.1007/s10479-013-1364-x},
url = {http://dx.doi.org/10.1007/s10479-013-1364-x},
researchr = {https://researchr.org/publication/JaniakKL13},
cites = {0},
citedby = {0},
journal = {Annals OR},
volume = {206},
number = {1},
pages = {577-583},
}