Manas Ranjan Patra Hrushikesha Mohanty A Formal Framework to Build Software Agents. 119-126 2001 conf/apsec/2001 APSEC http://csdl.computer.org/comp/proceedings/apsec/2001/1408/00/14080119abs.htm db/conf/apsec/apsec2001.html#PatraM01