TY - RPRT TI - An analysis of efficiency testing under the energy policy and conservation act : a case study with application to distribution transformers AU - Petersons, Oskars AU - Vangel, M AU - Stricklett, K L PY - 1999 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS TN 1427 DO - 10.6028/NIST.TN.1427 ER -