@misc{misc8ccd294b,
title   = {Ultrasonography evaluation of ascaris in the biliary tract: usual and unusual manifestations},
author = {Cerri, Giovanni Guido and Scatigno, A and Wierman, P and Magalhães, Álvaro Eduardo de Almeida},
year = {1988},
booktitle   = {World Federation for Ultrasound in Medicine and Biology Meeting}
}