Konar, A. and Sidiropoulos, N. D. (2022) “The Triangle-Densest-K-Subgraph Problem: Hardness, Lovász Extension, and Application to Document Summarization”, Proceedings of the AAAI Conference on Artificial Intelligence, 36(4), pp. 4075-4082. doi: 10.1609/aaai.v36i4.20325.