C.A. Middelburg. Programmatuur zonder Logica. Inaugural lecture (in Dutch), Utrecht University, Department of Philosophy, 1993. Electronic version.

C.A. Middelburg. Beyond SDL. UNU/IIST Lecture Notes: DesCaRTeS Course, The United Nations University, International Institute for Software Technology, 1997. Electronic version.

C.A. Middelburg. Searching publications on operating systems. arXiv:1003.5525v1 [cs.OS].

C.A. Middelburg. Searching publications on software testing. arXiv:1008.2647v1 [cs.SE].

J.A. Bergstra and C.A. Middelburg. Interest prohibition and financial product innovation. In A. Escurat, editor, Finance Islamique: Regard(s) sur une Finance Alternative, pages 274–284. Mazars Hadj Ali, Algiers, 2011. Electronic version.

C.A. Middelburg.  A short introduction to process theory. arXiv:1610.01412v1 [cs.LO].