Pak, B. (1968). Some considerations on the modulation mechanism of cosmic ray time variations. Universitetet.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPak, Byung-So. Some Considerations on the Modulation Mechanism of Cosmic Ray Time Variations. Uppsala: Universitetet, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPak, Byung-So. Some Considerations on the Modulation Mechanism of Cosmic Ray Time Variations. Universitetet, 1968.
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