@article{ref1,
title="Engineering safety requirements, safety constraints, and safety-critical requirements",
journal="Journal of object technology",
year="2004",
author="Firesmith, Donald",
volume="3",
number="3",
pages="27-27",
abstract="As software-intensive systems become more pervasive, more and more safety-critical systems are being developed and fielded. As we have come to rely more on software intensive systems, we have come to rely more on their functioning safely.<p />",
language="",
issn="1660-1769",
doi="10.5381/jot.2004.3.3.c3",
url="http://dx.doi.org/10.5381/jot.2004.3.3.c3"
}