• Hartmut Frommert. Bessel, Friedrich Wilhelm. Biela, Wilhelm Freiherr von. Halm, Jacob Karl Ernst. Kreutz, Heinrich Carl Friedrich. Lambert, Johann Heinrich. Messier, Charles. Moll, Gerard. Odierna, Giovanbatista. Seyfert, Carl Keenan. Contributions to the Biographical Encyclopedia of Astronomers, edited by Thomas Hockey. Kluwer Academic Publishers, 2007 [ADS: 2007bea..book.....H]. Second edition, 2014 [ADS: 2014bea..book.....H].
  There are similar webpages for: Friedrich Wilhelm Bessel, Wilhelm Freiherr von Biela, Heinrich Carl Friedrich Kreutz, Johann Heinrich Lambert, Charles Messier, Giovanni Battista Hodierna (Giovanbatista Odierna), and Carl Keenan Seyfert.
• Hartmut Frommert and Holger Schoor. Cosmological Background in the Higgs Scalar-Tensor Theory Without Higgs Particles. International Journal of Theoretical Physics, 38(2):723--733, February 1999. [Abstract, Preprint: LaTeX source, pdf]. [ADS: 1999IJTP...38..725F]
• Oleg von Styp Rekowski and Hartmut Frommert. Solution of the scalar-tensor Higgs theory without Higgs particles for static stars. International Journal of Theoretical Physics, 36(3):657--662, March 1997. [Abstract, Preprint: LaTeX source, pdf]. [ADS: 1997IJTP...36..657S], [ADS: 1997IJTP...36..657R]
• Hartmut Frommert. Coupling of massless particles to scalar fields. International Journal of Theoretical Physics, 36(3):643--656, March 1997. [Abstract, Preprint: LaTeX source, pdf]. [ADS: 1997IJTP...36..643F]
• Hartmut Frommert. Relativistic orbits of classical charged bodies in a spherically symmetric electrostatic field. International Journal of Theoretical Physics, 35(12):2663--2675, December 1996. [Abstract, Preprint: LaTeX source, PS figures, pdf]. [ADS: 1996IJTP...35.2631F]
• Heinz Dehnen and Hartmut Frommert. Higgs-mechanism without Higgs-particle. International Journal of Theoretical Physics, 32(7):1135--1142, July 1993. [Abstract]. [ADS: 1993IJTP...32.1135D]
• Heinz Dehnen, Hartmut Frommert and Farhad Ghaboussi. Higgs-field and a new scalar-tensor theory of gravity. International Journal of Theoretical Physics, 31(1):109--114, January 1992. [Abstract, Preprint: LaTeX source, pdf]. [ADS: 1992IJTP...31..109D]
• Heinz Dehnen and Hartmut Frommert. Higgs field gravity within the standard model. International Journal of Theoretical Physics, 30(7):985--998, July 1991. [Abstract, Preprint: LaTeX source, pdf]. [ADS: 1991IJTP...30..985D]
• Heinz Dehnen and Hartmut Frommert. Scalar gravity and Higgs potential. International Journal of Theoretical Physics, 29(4):361--370, April 1990. [Abstract, Preprint: LaTeX source, pdf]. [ADS: 1990IJTP...29..361D]
• Heinz Dehnen and Hartmut Frommert. Higgs field gravity. International Journal of Theoretical Physics, 29(6):537--546, June 1990. [Abstract, Preprint: LaTeX source, pdf]. [ADS: 1990IJTP...29..537D]
• Heinz Dehnen, Farhad Ghaboussi and Hartmut Frommert. Classical limit of an SU(2) x U(1) gauge field theory for gravity. International Journal of Theoretical Physics, 27(5):567--570, May 1988. [ADS: 1988IJTP...27..567D]

Theses

• Hartmut Frommert. Einfluß der galaktischen Rotation und des Sonnenquadrupolmoments auf Planetenbahnen (Influence of Galactic rotation and the solar quadrupole moment on planetary orbits). Diplomarbeit (Master's Thesis), University of Constance, Konstanz (Germany), November 1986.
• Hartmut Frommert. Higgsmechanismus und Gravitation (Higgs mechanism and gravitation). Doktorarbeit (PhD thesis), University of Constance, Konstanz (Germany), October 1991.

Also see my Astronomical Paper Publications (typically, also professional level)