Where can I find documents dealing with the data management plan?

National Technical Library - https://repozitar.techlib.cz/entities/publication/b74f172d-5aad-4440-aa3f-7fb3667d401a

Open Data - https://opendata.gov.cz/start

EOSC CZ Initiative – https://www.eosc.cz/

NZIS Open platform – https://www.nzip.cz/o-nzis-open