Griebel, Rolf, and Ulrich Montag, "The international problem of differential pricing for research literature,"Preliminary report on a project," prepared for the IFLA Section for the IFLA Section on Acquisition and Exchange, August 1989 (60-ACQUIS-2-E), Paris, France, p. 1
2.
Okerson, Ann, Of Making Many Books There is No End: Report on Serial Prices for the Association of Research Libraries, Eastchester, NY:Ann Okerson, April 1989, p. 10.
3.
ISO/9230 Draft International Standard - Determination of price indexes for books and serials purchased by libraries, Berlin , International Organization for Standardization , 1988, p. 3.
4.
American National Standard for Library and Information Sciences and Related Publishing Practices - Library Materials-Criteria for Price Indexes (Z39.20-1983), N.Y.American National Standards Institute, Inc., ,1983, p. 7.
5.
Young, Peter R., and Kathryn Hammell Carpenter, "Price Index for 1989: U.S. Periodicals, "Library Journal114: 49 (April 15, 1989).
6.
Lynden. Frederick C., "The Library Materials Price Situation in the United States, "LIBER Bulletin, 9/10: 89( 1978).
7.
Mann, Peter H., "Reporting Book Prices: Book Price Indices in the United Kingdom", Book Research Quarterly2: 88 (1986/1987).
8.
Ibid., p. 92.
9.
Thompson. Steven E., "Reporting Book Prices: German Book Prices". Book Research Quarterly2:82-84 (1986).
10.
Martinus Nijhoff International now publishes an annual index of Dutch book prices.
11.
Kurth, William H., A Strategy for Developing Price Indexes for Library Materials, prepared for the IFLA Committee on Statistics and Standards, November 1974, Washington, D.C., p. 6-7.
12.
Hickey, Doralyn, Price Indexes for Library Materials: a 1973 Perspective, prepared for the IFLA Committee on Statistics and Standards, August 1973, Grenoble (111/E/SS/10), p. 10.
13.
Pulis. Jane F., Price Indexes for Library Materials: a Progress Report, prepared for the IFLA Section on Statistics, September 1977 (79/E/SS/1), p. 6.
14.
Lynden, Frederick C., Price Indexes for Library Materials: Steps toward International Standardization, prepared for the Section on Statistics, August 1982, Montreal, p. 11-12.
15.
"Resolutions from the Section on the Exchange of Publications,"IFLA Annual, 1977, Munich: K.G. Saur, 1978, p. 35.
16.
Allardyce. Alexander, "Some Opportunities for IFLA's Division of Collections and Services,"IFLA Journal3: 243 (1977).
17.
"Price Indexes for Library Materials,"IFLA Journal 4: 60 (1978).
18.
Lynden, Frederick C., "International Standard Criteria for Price Indexes for Library Materials,"Bowker Annual of Library Trade Information, 1983, 23rd edition, N.Y., R.R. Bowker, Inc.1983, p. 440.
19.
Lofguist, William S., Statistical Series - U.S. Book Industry , Book Research Quarterly5: 79-83 (1989-90).