BibTex format
@article{Dowker:2010:50/505305,
author = {Dowker, F and Johnston, S and Surya, S},
doi = {50/505305},
journal = {JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL},
title = {On extending the quantum measure},
url = {http://dx.doi.org/10.1088/1751-8113/43/50/505305},
volume = {43},
year = {2010}
}