@article{Horowitz2005,
author = {Joel Horowitz and Sokbae 'Simon' Lee},
title = {Nonparametric estimation of an additive quantile regression model},
journal = {Journal of the American Statistical Association},
year = {2005},
month = {Dec},
volume = {100},
number = {472},
url = {http://caliban.asa.catchword.org/vl=1032951/cl=104/nw=1/rpsv/cw/asa/01621459/v100n472/s17/p1238},
}