What is "rockovnik"

Rockovnik (trans. Chrocknicle) is a forty-episode documentary aired on Radio Television of Serbia in 2011, written by Sandra Rančić and Dušan Vesić and directed by Vesić. The series focuses on the history of former Yugoslav rock scene from its beginnings in the late 1950s until the year 2000. The name of the show is a bilingual pun based on the words "rock" and "rokovnik" ( Serbian for planner).