Quantum reflection of antihydrogen from a liquid helium filmP.-P. Crépin, E. A. Kupriyanova, R. Guérout, A. Lambrecht, V. V. Nesvizhevsky, S. Reynaud, S. Vasiliev and A. Yu. VoroninEPL, 119 3 (2017) 33001DOI: https://doi.org/10.1209/0295-5075/119/33001