PMID: 5346895 Issn Print: 0020-9996 Publication Date: 1969/09/01 Print Facebook Twitter LinkedIn Email Determination of Focal-spot: Characteristics of Microfocus X-ray Tubes Sadayuki Sakuma; Yoshio Ayakawa; Yutaka Okumura; Hisashi Maekoshi Checking for direct PDF access through Ovid View on Journal Site Excerpt