1. Barry, Jeff. Automated system marketplace 2001: closing in on content. Library Journal [April 15, 2001]

2. Barry, Jeff~Griffiths, Jose-Marie; Peiling Wang. Automated system marketplace 2000: delivering the personalized library. Library Journal [April 1, 2000]

3. Annual survey of automated library system vendors: integrated, multi-user, multi-function systems running on main-frames, minis, and micros that use a multi-user operating system. Library Systems Newsletter [February / March 2000]

4. Keystone Systems, Inc. forwarding address has expired. Library Systems Newsletter [January 2000]

5. KLAS strengthens position in special needs libraries. Library Systems Newsletter [August 1999]

6. Annual survey of automated library system vendors: integrated, multi-user, multi-function systems running on main-frames, minis, and micros that use a multi-user operating system. Library Systems Newsletter [March / April 1999]

7. Annual survey of automated library system vendors: integrated, multi-user, multi-function systems running on main-frames, minis, and micros that use a multi-user operating system. Library Systems Newsletter [March / April 1998]

8. International survey of automated library system vendors: integrated, multi-user, multi-function systems running on main-frames, minis, and micros that use a multi-user operating system. Library Systems Newsletter [March / April 1997]

9. Keystone introduces KLAS client/server system. Library Systems Newsletter [October 1996]

10. Keystone pursues libraries for the blind and physically handicapped. Library Systems Newsletter [September 1996]

11. Customer support ratios. Library Systems Newsletter [July 1996]

12. International survey of automated library system vendors: integrated, multi-user, multi-function systems running on mainframes, minis, and micros that use a multi-user operating system. Library Systems Newsletter [March / April 1996]