"Institute of Electrical and Electronics Engineers." . . "IEEE Standards Coordinating Committee 14. Committee on Quantities, Units and Letter Symbols." . . . . . . "American national standard letter symbols for units of measurement SI units, customary inch-pound units, and certain other units"@en . "Recognized as an American National Standard (ANSI)"@en . . . . . . "American national standard letter symbols for units of measurement (SI units, customary inch-pound units, and certain other units)"@en . . "American National Standard Letter Symbols for Units of Measurement" . . . . . . .