N. Allouch, On the private provision of public goods on networks, Journal of Economic Theory, vol.157, pp.527-552, 2015.
DOI : 10.1016/j.jet.2015.01.007

C. Ballester, A. Calvò-armengol, and Y. Zenou, Who's Who in Networks. Wanted: The Key Player, Econometrica, vol.74, issue.5, pp.74-1403, 2006.
DOI : 10.1111/j.1468-0262.2006.00709.x

M. Belhaj, S. Bervoets, and F. Dero¨?andero¨?an, Efficient networks in games with local complementarities, Efficient Networks in Games with Local Complementarities, pp.357-380, 2016.
DOI : 10.3982/TE1742

URL : https://hal.archives-ouvertes.fr/hal-01446213

S. Bernstein and E. Winter, Contracting with Heterogeneous Externalities, American Economic Journal: Microeconomics, vol.4, issue.2, pp.50-76, 2012.
DOI : 10.1257/mic.4.2.50

URL : http://www.fas.nus.edu.sg/ecs/events/seminar/seminar-papers/09Feb12.pdf

F. Bloch, Targeting and Pricing in Social Networks, The Oxford Handbook of the Economics of Networks, 2015.
DOI : 10.1093/oxfordhb/9780199948277.013.34

URL : https://hal.archives-ouvertes.fr/hal-01309549

P. Bonacich, Power and Centrality: A Family of Measures, American Journal of Sociology, vol.92, issue.5, pp.1170-1182, 1987.
DOI : 10.1086/228631

A. Calvò-armengol and M. Jackson, The Effects of Social Networks on Employment and Inequality, American Economic Review, vol.94, issue.3, pp.426-454, 2004.
DOI : 10.1257/0002828041464542

O. Candogan, K. Bimpikis, and A. Ozdaglar, Optimal Pricing in the Presence of Local Network Effects, Operations Research, vol.94, issue.4, pp.883-905, 2012.
DOI : 10.1109/49.414634

D. Czarnitzki and A. Fier, Do Innovation Subsidies Crowd Out Private Investment? Evidence from the German Service Sector, Applied Economics Quarterly, vol.48, pp.1-25, 2002.

G. Demange, Optimal Targeting Strategies in a Network under Complementarities, Games an Economic Behavior, pp.84-103, 2017.

I. Fainmesser and A. Galeotti, Pricing Network Effects, The Review of Economic Studies, vol.75, issue.1, pp.165-198, 2016.
DOI : 10.1287/mnsc.1080.0897

A. Galasso, Coordination and bargaining power in contracting with externalities, Journal of Economic Theory, vol.143, issue.1, pp.558-570, 2008.
DOI : 10.1016/j.jet.2007.12.001

A. Galeotti, S. Goyal, M. Jackson, F. Vega-redondo, and L. Yariv, Network Games, Review of Economic Studies, vol.75, issue.2, pp.218-244, 2010.
DOI : 10.1017/CBO9780511804052

G. Genicot and D. Ray, Contracts and externalities: How things fall apart, Journal of Economic Theory, vol.131, issue.1, pp.71-100, 2006.
DOI : 10.1016/j.jet.2005.06.003

URL : http://www.econ.ucla.edu/SWET2003/Genicot.pdf

H. Görg and E. Strobl, The Effect of R&D Subsidies on Private R&D, Economica, vol.21, issue.294, pp.215-234, 2007.
DOI : 10.2307/2601030

S. Goyal and R. Moraga, R&D Networks, The RAND Journal of Economics, vol.32, issue.4, pp.686-707, 2001.
DOI : 10.2307/2696388

S. Goyal, R. Moraga, and M. Van-der-leij, Economics: An Emerging Small World, Journal of Political Economy, vol.114, issue.2, pp.403-432, 2006.
DOI : 10.1086/500990

URL : http://www.tinbergen.nl/~moraga/SmallWorldFinal.pdf

J. Hagedoorn, Inter-firm R&D partnerships: an overview of major trends and patterns since 1960, Research Policy, vol.31, issue.4, pp.477-492, 2002.
DOI : 10.1016/S0048-7333(01)00120-2

O. Hart and J. Tirole, Vertical Integration and Market Foreclosure, Brookings Papers on Economic Activity. Microeconomics, vol.1990, pp.205-286, 1990.
DOI : 10.2307/2534783

URL : http://dspace.mit.edu/bitstream/1721.1/64330/1/verticalintegrat00hart.pdf

B. Holmstrom, Moral Hazard in Teams, The Bell Journal of Economics, vol.13, issue.2, pp.324-340, 1982.
DOI : 10.2307/3003457

B. Klein, R. Crawford, and A. Alchian, Vertical Integration, Appropriable Rents, and the Competitive Contracting Process, pp.297-326, 1978.
DOI : 10.4337/9781849806909.00025

F. Lafontaine, How and Why Do Franchisors Do What They Do: A Survey Report Franchising: Passport for Growth and World of Opportunity, 6th Annual Proceedings of the Society of Franchising. Lincoln: International Center for Franchise Studies, 1992.

A. Mas and E. Moretti, Peers at Work, American Economic Review, vol.99, issue.1, pp.112-145, 2009.
DOI : 10.1257/aer.99.1.112

URL : https://doi.org/10.3386/w12508

O. 'brien, D. , and G. Shaffer, Vertical Control with Bilateral Contracts, The RAND Journal of Economics, vol.23, issue.3, pp.299-308, 1992.
DOI : 10.2307/2555864

J. Sakovics and J. Steiner, Who Matters in Coordination Problems?, American Economic Review, vol.102, issue.7, pp.3439-3461, 2012.
DOI : 10.1257/aer.102.7.3439

I. Segal, Contracting with Externalities, The Quarterly Journal of Economics, vol.114, issue.2, pp.337-388, 1999.
DOI : 10.1086/261385

URL : https://cloudfront.escholarship.org/dist/prd/content/qt90c168j1/qt90c168j1.pdf

I. Segal, Coordination and discrimination in contracting with externalities: divide and conquer?, Journal of Economic Theory, vol.113, issue.2, pp.147-181, 2003.
DOI : 10.1016/S0022-0531(03)00114-5

O. Williamson, Transaction-Cost Economics: The Governance of Contractual Relations, The Journal of Law and Economics, vol.22, issue.2, pp.233-261, 1979.
DOI : 10.1086/466942

J. Zhou and Y. Chen, Key leaders in social networks, Journal of Economic Theory, vol.157, pp.212-235, 2015.
DOI : 10.1016/j.jet.2015.01.005

J. Zuniga-vicente, C. Alonso-borrego, F. Forcadell, and J. Galan, ASSESSING THE EFFECT OF PUBLIC SUBSIDIES ON FIRM R&D INVESTMENT: A SURVEY, Journal of Economic Surveys, vol.17, issue.1, pp.36-67, 2014.
DOI : 10.1016/j.chieco.2005.04.002