F. Xie and D. Levinson, Evolving transportation networks, 2011.

C. Roth, S. Kang, M. Batty, and M. Barthelemy, A longtime limit for world subway networks, Journal of The Royal Society Interface, 2012.
URL : https://hal.archives-ouvertes.fr/halshs-00778518

M. Barthelemy, Morphogenesis of Spatial Networks, 2018.

A. Bottinelli, M. Gherardi, and M. Barthelemy, Efficiency and shrinking in evolving networks, 2019.
URL : https://hal.archives-ouvertes.fr/cea-02563959

A. Tero, S. Takagi, T. Saigusa, K. Ito, D. P. Bebber et al., Rules for biologically inspired adaptive network design, Science, vol.327, p.439, 2010.

T. Latty, K. Ramsch, K. Ito, K. Nakagaki, D. J. Sumpter et al., Structure and formation of ant transportation networks, Journal of The Royal Society Interface, vol.8, p.1298, 2011.

A. Perna, B. Granovskiy, S. Garnier, S. C. Nicolis, M. Labédan et al., Individual rules for trail pattern formation in Argentine ants (Linepithema humile), PLoS Computational Biology, vol.8, p.2592, 2012.
URL : https://hal.archives-ouvertes.fr/hal-02325189

Q. Ma, A. Johansson, A. Tero, T. Nakagaki, and D. Sumpter, Current-reinforced random walks for constructing transport networks, Journal of The Royal Society Interface, vol.10, 2013.

A. Bottinelli, E. Van-wilgenburg, D. Sumpter, and T. Latty, Local cost minimization in ant transport networks: from small-scale data to large-scale trade-offs, Journal of The Royal Society Interface, vol.12, 2015.

V. Latora and M. Marchiori, Is the Boston subway a small-world network, Physica A, vol.314, issue.1-4, pp.109-122, 2002.

K. Lee, W. S. Jung, J. S. Park, and M. Y. Choi, Statistical analysis of the Metropolitan Seoul Subway System: Network structure and passenger flows, Physica A, vol.387, issue.24, pp.6231-6235, 2008.

S. Derrible and C. Kennedy, Characterizing metro networks: state, form, and structure, Transportation, vol.37, p.275, 2010.

S. Derrible, Network centrality of metro systems, PloS one, vol.6, issue.7, p.40575, 2012.

R. Louf, C. Roth, and M. Barthelemy, Scaling in transportation networks, PLoS One, vol.9, issue.7, p.102007, 2014.
URL : https://hal.archives-ouvertes.fr/cea-01071490

, Wikipedia page on rapid transit

R. L. Graham and P. Hell, On the history of the minimum spanning tree problem. Annals of the History of Computing, vol.7, pp.43-57, 1985.

M. Barthelemy and A. Flammini, Optimal traffic networks', Journal of Statistical Mechanics: Theory and Experiment, vol.24, issue.07, p.7002, 2006.

F. K. Hwang, D. S. Richards, and P. Winter, The Steiner tree problem, 1992.

N. Megiddo and K. J. Supowit, On the complexity of some common geometric location problems, SIAM journal on computing, vol.13, pp.182-196, 1984.

R. Rüschendorf and L. , Mass transportation problems, 1998.

A. Bejan, Street network theory of organization in nature, Journal of Advanced Transportation, vol.30, issue.2, pp.85-107, 1996.

A. Bejan and G. A. Ledezma, Streets tree networks and urban growth: optimal geometry for quickest access between a finite-size volume and one point, Physica A: Statistical Mechanics and its Applications, vol.255, issue.2, pp.211-217, 1998.

M. Mc-gettrick, The role of city geometry in determining the utility of a small urban light rail/tram system, 2019.

A. Okabe, B. Boots, K. Sugihara, and S. N. Chiu, Spatial Tessellations: Concepts and Applications of Voronoi Diagrams, 1992.

G. Laporte and J. Mesa, The Design of Rapid Transit Networks, Location Science, pp.581-594

H. Sagan, Space-filling curves, 1994.

D. Aldous and M. Barthelemy,

N. Madras and A. D. Sokal, The pivot algorithm: A highly efficient Monte Carlo method for the selfavoiding walk, J. Stat. Phys, vol.50, p.109186, 1988.