daylight availability. interior lighting. operating timeFerenčíková, Mária, 1967- Daylight availability in interiors during operating time / aut. Mária Ferenčíková, Stanislav Darula. -- Saarbrücken: LAP LAMBERT Academic Publishing, 2019. -- 81 s. -- ISBN : 978-613-9-45969-8. Darula, Stanislav, 1953-