Ackermann, H. W. (2009). Phage classification and characterization. Methods Mol. Biol. 501, 127–140. doi: 10.1007/978-1-60327-164-6_13
Ackermann, H. W., and Prangishvili, D. (2012). Prokaryote viruses studied by electron microscopy. Arch. Virol. 157, 1843–1849. doi: 10.1007/s00705-012-1383-y