TY - RPRT TI - ERATES: a computer program for calculating time-of-use, block, and demand charges for electricity usage (version 1.2), user's guide and reference manual PY - 1997 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 5186e1997 DO - 10.6028/NIST.IR.5186e1997 ER -