P. J. Heikkinen, A. Casey, L. V. Levitin, X. Rojas, A. Vorontsov, P. Sharma, N. Zhelev, J. M. Parpia & J. Saunders Nature Communications volume 12, Article number: 1574 (2021) Fragility of Surface States in Topological Superfluid 3He.pdf
