Author	Title	Journal	ISSN	Publisher	Date	Volume	Number	Page	URL	URL(DOI)
OKUDA Kuniharu	The Position Fixing Error due to The Antenna and Geoid Heights by NNSS : The Result by Simulation	紀要	03879291	Yuge National College of Maritime Technology	1980-01-31	2		27-35	http://ci.nii.ac.jp/naid/110000474560/en/