@incollection{Grigoriu19,
author = {Liliana Grigoriu},
title = {Approximation for Scheduling on Parallel Machines with Fixed Jobs or Unavailability Periods},
booktitle = {Scheduling Problems},
publisher = {IntechOpen},
address = {Rijeka},
year = {2019},
editor = {Rodrigo da Rosa Righi},
chapter = {4},
doi = {10.5772/intechopen.89694},
url = {https://doi.org/10.5772/intechopen.89694}
}