Reference:

M. Nickles and M. Rovatsos. Towards a unified model of sociality in multiagent systems. International Journal of Computer and Information Science, 5(2):73–88, 2004.

Suggested BibTeX entry:

@article{NRBW04a,
    author = {M. Nickles and M. Rovatsos},
    journal = {International Journal of Computer and Information Science},
    number = {2},
    pages = {73-88},
    title = {Towards a Unified Model of Sociality in Multiagent Systems},
    volume = {5},
    year = {2004}
}