@InProceedings{merz:spatio,
author = {Alexander Knapp and Stephan Merz and Martin Wirsing},
title = {Refining Mobile UML State Machines},
booktitle = {10th Intl. Conf. Algebraic Methodology and Software Technology (AMAST 2004)},
year = 2004,
editor = {Savi Maharaj and Charles Rattray and Carron Shankland},
series = {Lecture Notes in Computer Science},
address = {Stirling, Scotland},
month = {July},
publisher = {Springer-Verlag}
}