While OpenGapps officially only supports back to Android 4.4, community mirrors sometimes host "test" builds for 4.1.1. This is not recommended unless you trust the source.
Google has never released “official” Gapps (Google Apps) as a standalone flashable ZIP for Android 4.1.1 Jelly Bean. The filename you’ve provided is almost certainly from a third-party source (like OpenGapps, or an unofficial XDA Developers forum post). Writing an essay treating it as “official” would be factually incorrect.