In the JIPA Illustration ‘Upper Sorbian’, in the list of references on page 366, the references Jocz (2011) and Jocz (2015) should read, respectively:
Jocz, Lechosław. 2011. Wokalowy system hornjoserbskeje rěče přitomnosće [The vowel system of contemporary Upper Sorbian]. Szczecin: volumina.pl Daniel Krzanowski.
Jocz, Lechosław. 2015. Studien zum obersorbischen Konsonantismus. Szczecin: volumina.pl Daniel Krzanowski.