Type specimens of fossils in the regional museum of Dr. B. Horak in Rokycany and in
the West-Bohemian Museum in Plzeň : 2 : Graptolithina / Jaroslav Kraft, 1981
[Palaeontological Workshop held in honour of Doc. RNDr. Jaroslav Kraft, CSc. (9.4.1940-10.1.2007),
Plzeň, 17th and 18th October 2008] / edited by Petr Budil, 2008