@inbook{Aspelmeyer2022, author = {Aspelmeyer, Markus}, editor = {Kiefer, Claus}, year = {2022}, pages = {85-95}, title = {When Zeh Meets Feynman: How to Avoid the Appearance of a Classical World in Gravity Experiments}, publisher = {Springer}, address = {Cham}, journal = {From Quantum to Classical. Essays in Honour of H.-Dieter Zeh} }