@techreport{repORt:2021-63,
	author = {F.J.L. Willamowski and A.M. Tillmann},
	title = {Minimizing Airplane Boarding Time},
	institution = {Lehrstuhl f\"{u}r Operations Research, RWTH Aachen University},
	year = {2021},
	type = {repORt},
	number = {2021--63},
	month = {Apr},
	url = {https://www.or.rwth-aachen.de/files/research/repORt/2021__Minimizing_Airplane_Boarding_Time__Willamowski_Tillmann_v2.pdf}
}