On Primitive Sets in Graphs. - Michael Hager (Eur. J. Comb., 1982)

On Halin-lattices in graphs. - Michael Hager (Discret. Math., 1983)

Pendant tree-connectivity. - Michael Hager (J. Comb. Theory B, 1985)

On score sets for tournaments. - Michael Hager (Discret. Math., 1986)

Path-connectivity in graphs. - Michael Hager (Discret. Math., 1986)

DIANE: A Multimedia Annotation System. - Sandford Bessler; Michael Hager; Hartmut Benz; Rolf Mecklenburg; Steffen Fischer (ECMAST, 1997)

Media Streaming in a Multimedia Annotation Application. - Sandford Bessler; Michael Hager (ECMAST, 1998)