Karavias D., Panagopoulos C., Vagianos C., Vagenas C., Rathosis S., and Androulakis J. “Infected Echinococcal Cyst. A Common Cause of Pyogenic Hepatic Abscess”. Upsala Journal of Medical Sciences, vol. 93, no. 3, Sept. 1988, pp. 289-96, doi:10.3109/03009738809178554.