Bibliografie
Conference Paper (international conference)
Qualitative and Quantitative Information in Systems
: Second European School of Systems Science, p. 321-328 , Eds: Andreewsky E., Mehl L., Saint-Paul L.
: AFCET, (Paris 1992)
: European School of Systems Science /2./, (Sainte-Odile, FR, 06.10.1992-11.10.1992)