TY - GEN AU - Priya D Lavappa AU - Joshua D Kneifel C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2020-04-01 04:04:00 DO - https://doi.org/10.6028/NIST.IR.85-3273-35 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2020 TI - Energy price indices and discount factors for life-cycle cost analysis::2020 annual supplement to NIST Handbook 135 ER -