@inproceedings{Rohlfing04:PAF,
doi = {10.1007/978-3-540-30135-6_77},
author = {Torsten Rohlfing and Daniel B. Russakoff and Joachim Denzler and Calvin R. Maurer},
booktitle = {International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI)},
title = {Progressive Attenuation Fields: Fast 2D-3D Image Registration Without Precomputation},
pages = {631--638},
year = {2004},
}