Fujiwara, Y., Nakatsuji, M., Shiokawa, H., Mishima, T. and Onizuka, M. (2013) “Fast and Exact Top-k Algorithm for PageRank”, Proceedings of the AAAI Conference on Artificial Intelligence, 27(1), pp. 1106-1112. doi: 10.1609/aaai.v27i1.8454.