^Kristen Ann Stauffer Thompson (2008). Quantitative Effects of Defective Interfering Virus-like Particles on the Growth and Population Behavior of Vesicular Stomatitis Virus. pp. 2–. ISBN 978-0-549-63757-8.
^Gard, S. (1952). "Studies on the sedimentation of influenza virus". Archiv für die Gesamte Virusforschung. 4 (5): 591–611. doi:10.1007/BF01242026. PMID 14953289. S2CID 21838623.