@misc{misc, title  = {{A Proof that Multiple Waves Propagate in Ensemble-Averaged Particulate  Materials}},

 url = {{}},

 year = {{2019}},

 month = {{5}},

 author = {{Gower AL and Abrahams ID and Parnell WJ}},

 doi = {{10.48550/arxiv.1905.06996}},

 note = {{Accessed on 2024/12/22}}}