@misc{1178066, author = {Harold E Marshall}, title = {Recommended practice for measuring simple and discounted payback for investments in buildings and building systems:}, year = {1984}, month = {1984-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.84-2850}, language = {en}, }