See the world's first airplane bunk beds in economy | House & Garden
Bunk beds in aircraft cabins: the realistic prospects - Aircraft Interiors International
Air New Zealand to install 'Skynest' bunk beds from 2024
Why don't planes have a bunk bed section? It'd roughly take the same space (probably even less) as seats and would be much more comfortable, and more secure? - Quora
What are the chances of passengers getting bunk beds in Economy? | The Sun
Sleeper Class: When airplanes had bunk beds, just like trains | Condé Nast Traveller India