Randolph W. Church, ed. Deterioration of book stock: Causes and remedies. Two studies on the permanency of book paper conducted by W.J. Barrow, Virginia State Library Publications, No. 10 ( 1959)
2.
Reizaburo Oye et al. Paper deterioration suppression treatment by deacidification agent. Research on acidic paper problem of library and archives collections p.133 (1987)
3.
3 About 80% of commercial books use paper over pH 6.5 in Japan today. cf. Preservation Office A decade of encouraging acid-free paper use: Report of annual pH test on newly published books. National Diet Library Monthly Bulletin, No. 420 (1996)
4.
Takayuki Okayama et al. Mass deacidification of acidic paper documents . Proceedings of 50th Appita Annual General conference (1996) p.321
5.
Reizaburo Oye et al. Evaluation method of degraded paper. Development of various paper strengthening methods, p.17-29 (1994)
