NOVÁK, Milan, Petr ČERNÝ, Pavel POVONDRA and Radek ŠKODA. Věžná near Nedvědice. Beryl pegmatite. Minerals of interest: cordierite (Li,Be,H2O), beryl, dravite, oxy-dravite (Li,B,OH,O,F). In
Field Trip Guidebook, International Symposium LERM 2003. Brno: Masarykova univerzita, 2003, p. 31-37. ISBN 80-7028-198-7.