Thomas Hackman

VizieR Online Data Catalog: V368 Cep UBVRI time series (Kahanpaa+, 1999)

J. Kahanpaa, Lauri Jetsu, L. Alha, 1999 .

VizieR Online Data Catalog: II Pegasus photometry during 1979-2010 (Lindborg+, 2013)

Gregory W. Henry, Lauri Jetsu, Thomas Hackman, 2013 .

Contemporaneous Imaging Comparisons of the Spotted Giant σ Geminorum Using Interferometric, Spectroscopic, and Photometric Data

John D. Monnier, University of Michigan, Heidi Korhonen, 2017, 1709.10109.

Spot evolution and active longitudes on FK Com: more than a decade of detailed surface mapping

Klaus G. Strassmeier, Thomas Hackman, H. Korhonen, 2009 .

The Application of FORS1 Spectropolarimetry to the Investigation of Cool Solar-like Stars

Markus Wittkowski, Heidi Korhonen, Klaus G. Strassmeier, 2009 .