J. Dobbins: Well-bounded semigroups in locally compact groups.
Math. Zeitschr. 148 (1976), 155-167.

5628 George Graham: Differentiable semigroups. 
2831 Hofmann/Ju''rgensen/Weinert, 57-127.

5634 Joachim Hilgert: Applications of Lie semigroups in analysis.
3178 Hofmann/Lawson/Pym, 27-50.

3177 Joachim Hilgert/Karl Heinrich Hofmann/Jimmie Lawson: Lie groups,
convex cones, and semigroups. Oxford UP 1989.

Joachim Hilgert/Karl-Hermann Neeb: Lie semigroups and applications. 
SLN Math. 1552 (1993).

R. Hirschhorn: Topological semigroups, sets of generators and
controllability. Duke J. Math. 40 (1973), 937-949.

2057 Karl Heinrich Hofmann: Einige Ideen Sophus Lies - hundert Jahre danach.
In 2790 Chatterji/, 93-125.

5633 Karl Heinrich Hofmann: Lie groups and semigroups.
3178 Hofmann/Lawson/Pym, 3-26.

12746 Karl Heinrich Hofmann: A history of topological and analytical
semigroups. TU Darmstadt Preprint 2046 (1999), 27p.

Karl Heinrich Hofmann/J. Lawson: The local theory of semigroups in
nilpotent Lie groups. Semigroup Forum 23 (1981), 343-357.

5629 Karl Heinrich Hofmann/J. Lawson: Foundations of Lie semigroups.
2831 Hofmann/Ju''rgensen/Weinert, 127-201.

3178 Karl Heinrich Hofmann/Jimmie Lawson/John Pym (ed.): The analytical
and topological theory of semigroups. De Gruyter 1990.

Karl Heinrich Hofmann/Jimmie Lawson/E. Vinberg (ed.): Semigroups in
algebra, geometry and analysis. De Gruyter 1995, 370p.

Karl Heinrich Hofmann/Wolfgang Ruppert: On the interior of subsemigroups
of Lie groups. Trans. AMS 324 (1991), 169-179.

Karl Heinrich Hofmann/Wolfgang Ruppert: Lie groups and subsemigroups
with surjective exponential function. Memoirs AMS 1997.

Karl Heinrich Hofmann/Z. Jurek: Some analytical semigroups occurring
in probability theory. J. Theor. Prob. Theory 9 (1996), 745-763.

V. Jurdjevic/H. Sussman: Control systems on Lie groups.
J. Diff. Equ. 12 (1972), 313-329.

R. Langlands: On Lie semigroups. Can. J. Math. 12 (1960), 686-693.

5635 Jimmie Lawson: Embedding semigroups into Lie groups.
3178 Hofmann/Lawson/Pym, 51-80.

C. Loewner: On semigroups and geometry. Bull. AMS 70 (1964), 1-15.

Karl-Hermann Neeb: Subsemigroups of SL(2).
Semigroup Forum ... (ca. 1990), ...

3179 Lex Renner: Algebraic varieties and semigroups.
3178 Hofmann/Lawson/Pym, 81-101.

H. Sussman/V. Jurdjevic: Controllability of nonlinear systems.
J. Diff. Equ. 12 (1972), 95-116.