American Society of Mechanical Engineers. Boiler and Pressure Vessel Committee & Rao, K. R. (2009). Companion guide to the ASME boiler & pressure vessel code: Criteria and commentary on select aspects of the boiler & pressure vessel and piping codes (Third edition.). ASME Press. https://doi.org/10.1115/1.802694

American Society of Mechanical Engineers. Boiler and Pressure Vessel Committee and K. R. Rao. Companion Guide to the ASME Boiler & Pressure Vessel Code: Criteria and Commentary on Select Aspects of the Boiler & Pressure Vessel and Piping Codes. Third edition. New York, NY: ASME Press, 2009. https://doi.org/10.1115/1.802694.

American Society of Mechanical Engineers. Boiler and Pressure Vessel Committee and K. R. Rao. Companion Guide to the ASME Boiler & Pressure Vessel Code: Criteria and Commentary on Select Aspects of the Boiler & Pressure Vessel and Piping Codes. Third edition. ASME Press, 2009. https://doi.org/10.1115/1.802694.