1. COM, http://ww.microsoft.com/com.
2. CORBA 3.0. http://www.omg.org/news/pr98/component.html.
3. Enterprise JavaBeans. http://java.sun.com/products/ejb.
4. JavaBeans. http://www.sun.com/beans/spec.html.
5. An empirical study of the correlation between code coverage and reliability estimation;Chen,1996