Eric Johnson/Kevin Reichard: X Window application programming.
MIS 1992, 600p. DM 98.

16261 Eric Johnson/Kevin Reichard: Advanced X Window application programming.
MIS 1990, 610p.

16239 Eric Johnson/Kevin Reichard: Professional graphics programming in the
X Window system. MIS 1993, 1190p.

6104 Oliver Jones: Einfuehrung in das X-Window-System.
Hanser 1991, 480p. 3-446-15798-0. DM 86.

16145 Norman Lin: Linux 3D graphics programming. Wordware 2001, 600p. $42.

16177 Norman Lin: Advanced Linux 3D graphics programming.
Wordware 2001, 620p. $41.

7032 Adrian Nye: Xlib programming manual.
O'Reilly 1992, 820p. 1-56592-002-3. DM 70.

7033 Adrian Nye: Xlib reference manual.
O'Reilly 1992, 1140p. 1-56592-006-9. DM 70.

Adrian Nye (ed.): X protocol reference manual.
O'Reilly 1992, 520p. 1-56592-008-2.

6835 Matthias Oberdorfer/Roland Oberdorfer: Grafikprogrammierung unter 
X Window. Franzis 1994, 420p. mit CD-ROM (welcher u.a. Linux enthaelt).
3-7723-6602-3. DM 108.

16199 Robert Scheifler/James Gettys: X Window system. Digital Press 1992, 1000p.