| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Advanced ABAP Programming for SAP | 978-0-7615-1798-6 (0-7615-1798-7) | 1999 | Robert W. Lyfareff |
| Getting Started with SAP R/3: An Introductory Guide to R/3 Navigation and Use | 978-0-7615-1904-1 (0-7615-1904-1) | 1998 | Robert Lyfareff |
| Java and BAPI Technology for SAP | 978-0-7615-2305-5 (0-7615-2305-7) | 2000 | Robert Lyfareff · Anil Thakur |
G D · G.M. · Gareth Debruyn · Gareth M. De Bruyn · M.D