References
Harry Delugach
with Smith, B. J. (2006)., A framework for analyzing and testing requirements with actors in conceptual graphs, in P. Hitzler & P. Øhrstrøm (eds.), Conceptual structures: inspiration and application, Dordrecht, Springer, pp. 401-412.
with Harper, L. W. (2004)., Using conceptual graphs to represent agent semantic constituents, in K. E. Wolff, H. D. Pfeiffer & H. Delugach (eds.), Conceptual structures at work, Dordrecht, Springer, pp. 333-345.
with Wolff, K. , Pfeiffer, H. D. (eds) (2004). Conceptual structures at work: 12th international conference on conceptual structures, Springer, Dordrecht.