2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC). IEEE.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC). IEEE.
एमएलए (8वां संस्करण) प्रशस्ति पत्र2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC). IEEE.
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