@article{GCM-J-2012-Radke,
	author        = "Hendrik Radke",
	ee            = "http://journal.ub.tu-berlin.de/eceasst/article/view/831",
	journal       = "{Electronic Communications of the EASST}",
	title         = "{HR* Graph Conditions Between Counting Monadic Second-Order and Second-Order Graph Formulas}",
	volume        = 61,
	year          = 2013,
}