) "Cost Sharing", In "Algorithmic Game Theory", chapter 15.
   Kamal Jain, Mohammad Mahdian
   http://www.mahdian.info/AGTcostsharing.pdf

2) "Strategyproof Sharing of Submodular Costs: Budget-Balance vs. Efficiency",
    Herve Moulin, Scott Schenker
    Economic Theory, 18:511-533, 2001
    www.icir.org/shenker/cost.ps

3) "Sharing the Cost of Multicast Transmissions",
   J. Feigenbaum, C. H. Papadimitriou, Scott Schenker,
   Proceedings of ACM STOC, 2000
   http://www.cs.berkeley.edu/~christos/multicast.ps

4) "Group Strategyproof Mechanisms via Primal-Dual Algorithms"
    Martin Pal, Eva Tardos
    Proceedings of IEEE FOCS, 2003: 584-593
    http://martin.palenica.com/papers/xmono.ps

5) "A Group-Strategyproof Cost Sharing Mechanism for the Steiner Forest Game"
   J. Konemann, S. Leonardi, G. Schafer, S. H. M. van Zwam
   SIAM J. Comput. 37(5): 1319-1341 (2008)
   http://www.math.tu-berlin.de/coga/people/schaefer/ftp/pdf/klsz.pdf

6) "New trade-offs in cost-sharing mechanisms",
   Tim Roughgarden, Mukund Sundararajan
   Proceedings of ACM STOC, 2006: 79-88
   http://theory.stanford.edu/~tim/papers/trade.pdf

7) "Beyond Moulin Mechanisms"
   A. Mehta, T. Roughgarden, M. Sundararajan
   Proceedings of ACM Electronic Commerce, 2007
   http://theory.stanford.edu/~tim/papers/bmm.pdf