Dear Matěj, good morning,
After three years, here I am again to ask for some help once more.
I continue to update the "database" of contributors to Prevezanika Chronika (Q16329615)
There are 272 contributors to date. [https://www.wikidata.org/w/index.php?title=Special:WhatLinksHere/Q16329615&limit=500 here is what links to Prevezanika Chronika]
What I would like you to do (if you have the time and with your genious automatic way !!!) is to add a reference within "Contributed to Creative Work" (Property:P3919). The reference should be "Stated in" (Property:P248) "Prevezanika Chronika. Index of vol. 1-50" (Q21087031). Caution: in some contributors there is already a reference.
Please, let me know if you could do such an addition.
Best wishes from a cold Greek town(Q213898)!!! Unusually cold for the time of year!
Nikos