Petersen, S.
(1993),
Energy prices and discount factors for life-cycle cost analysis 1994 ::annual supplement to NBS Handbook 135 and NBS Special Publication 709, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.85-3273-8
(Accessed October 8, 2024)