V. Batagelj et A. Mrvar, A subquadratic triad census algorithm for large sparse networks with smallmaximum degree, SOC NETWORK, 23(3), 2001, pp. 237-243
In the paper a subquadratic (O (m), m is the number of arcs) triad census a
lgorithm for large and sparse networks with small maximum degree is present
ed. The algorithm is implemented in the program Pajek. (C) 2001 Elsevier Sc
ience B.V. All rights reserved.