BibTex format
@inbook{Buzzard:2001,
author = {Buzzard, K},
booktitle = {Arithmetic algebraic geometry},
editor = {Conrad and Rubin},
pages = {223--225},
publisher = {American Mathematical Society Institute for Advanced Study},
title = {A mod l multiplicity one result, appendix to "Lectures on Serre's Conjectures" by K. Ribet and W. Stein},
year = {2001}
}