@Article{Bell09,
author = {Alan Bell and Jason Brenier and Michelle Gregory and Cynthia Girand and Dan Jurafsky},
year = {2009},  
title = {Predictability Effects on Durations of Content and Function Words in Conversational English}, 
journal = {Journal of Memory and Language},
volume = {60},
number = {1},
pages = {92--111},
url = {pubs/bell09.pdf}
}