Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
TUTTLE R. K.,The synthesized test oscillator-A new signal source for the 0.1 Hz-13 MHz range,Hewlett-Packard Journal,,,1972,23,11,2-8,https://cir.nii.ac.jp/crid/1570291224547510272,