@misc{indiciae0f1f9e96727b, title = {Billiard balls and matter-wave interferometry.}, author = {R Friedberg and SR Hartmann}, year = {1993}, doi = {10.1103/physreva.48.1446}, url = {https://pubmed.ncbi.nlm.nih.gov/9909751/}, note = {Source identifier: 9909751} }