An affiliation network of 20 directors of 24 corporations and social clubs.
An affiliation network; see is_an
.
Barnes, R. & Burkett, T. (2010). Structural Redundancy and Multiplicity in Corporate Networks. Connections, 30(2), p. 4--20. http://www.insna.org/PDF/Connections/v30/2010_I-2_P-1-1.pdf