Fick, S. E. (2008). Long-Term Stability of the NIST Standard Ultrasonic Source. J Res Natl Inst Stand Technol.
Chicago Stili AlıntıFick, Steven E. "Long-Term Stability of the NIST Standard Ultrasonic Source." J Res Natl Inst Stand Technol 2008.
MLA AlıntıFick, Steven E. "Long-Term Stability of the NIST Standard Ultrasonic Source." J Res Natl Inst Stand Technol 2008.
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