[1] C F M Magalhaes, A P F Atman, G Combe, J G Moreira, Jamming transition in a two-dimensional open granular pile with rolling resistance, Pap. Phys. 6, 060007 (2014).
http://dx.doi.org/10.4279/PIP.060007

[2] I Zuriguel, A Janda, A Garcimartin, C Lozano, R Arevalo and D Maza, Silo clogging reduction by the presence of an obstacle, Phys. Rev. Lett. 107 278001 (2011).
http://dx.doi.org/10.1103/PhysRevLett.107.278001

[3] A P F Atman, P Brunet, J Geng, G Reydellet, P Claudin, R P Behringer, E Clement, From the stress response function (back) to the sand pile ``dip", Eur. Phys. J. E 17 93 (2005).
http://dx.doi.org/10.1140/epje/i2005-10002-2

[4] I Zuriguel, A Garcimartin, D Maza, L A Pugnaloni and J M Pastor, Jamming during the discharge of granular matter from a silo, Phys. Rev. E 71 051303 (2005).
http://dx.doi.org/10.1103/PhysRevE.71.051303

[5] I Zuriguel, L A Pugnaloni, A Garcimartin, D Maza, Jamming during the discharge of grains from a silo described as a percolating transition, Phys. Rev. E 68 030301 (2003).
http://dx.doi.org/10.1103/PhysRevE.68.030301

[6] A Janda, I Zuriguel, A Garcimartin, L A Pugnaloni and D Maza, Jamming and critical outlet size in the discharge of a two-dimensional silo, Europhys. Lett. 84 44002 (2008).
http://dx.doi.org/10.1209/0295-5075/84/44002

[7] K To, P Y Lai and H K Pak, Jamming of granular flow in a two-dimensional hopper, Phys. Rev. Lett. 86 71 (2001);
http://dx.doi.org/10.1103/PhysRevLett.86.71

K To, Jamming transition in two-dimensional hoppers and silos, Phys. Rev. E 71 060301 (2005).
http://dx.doi.org/10.1103/PhysRevE.71.060301

[8] C F M Magalhaes, J G Moreira and A P F Atman, Catastrophic regime in the discharge of a granular pile, Phys. Rev. E 82 051303 (2010).
http://dx.doi.org/10.1103/PhysRevE.82.051303

[9] W A Beverloo, H A Leniger, and J van de Velde, The flow of granular solids through orifices, Chem. Eng. Sci. 15 260 (1961).
http://dx.doi.org/10.1016/0009-2509(61)85030-6

[10] C Mankoc, A Janda, R Arevalo, J M Pastor, I Zuriguel, A Garcimartin and D Maza, The flow rate of granular materials through an orifice, Gran. Matt. 9 407 (2007).
http://dx.doi.org/10.1007/s10035-007-0062-2

[11] S Dorbolo et al., Influence of the gravity on the discharge of a silo, Gran. Matt. 15 263 (2013).
http://dx.doi.org/10.1007/s10035-013-0403-2

[12] R Arevalo, I Zuriguel, D Maza, A Garcimartin, Role of driving force on the clogging of inert particles in a bottleneck, Phys. Rev. E 89 042205 (2014).
http://dx.doi.org/10.1103/PhysRevE.89.042205

[13] A Janda, I Zuriguel and D Maza, Flow rate of particles through apertures obtained from Self-Similar density and velocity profiles, Phys. Rev. Lett. 108 248001 (2012).
http://dx.doi.org/10.1103/PhysRevLett.108.248001