Reference

Ivan Cicha, J. Krhovsky, Rostislav Brzobohaty [Brzobohatý], J. Ctyroka, C. Von Daniels, T. Haunold, M. Horvath, E. Luczkowska, H. Reiser, et al. (1986): Oligocene and Miocene Uvigerina from the western and central Paratethys – Utrecht Micropaleont. Bull. – 35: 121 - 181.