Bhattacharya, S., Dvorák, W., Henzinger, M. H., &; Starnberger,https://doi.org/10.4230/LIPICS.STACS.2015.90__Martin. (2015). Welfare maximization with friends-of-friends network externalities. In 32nd International Symposium on Theoretical Aspects of Computer Science (Vol. 30, pp. 90–102). Garching, Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik.https://doi.org/10.4230/LIPICS.STACS.2015.90 
LibreCat: https://research-explorer.ista.ac.at/record/11837
DOI: 10.4230/LIPICS.STACS.2015.90