1. A.N.W. Hone and S. Lafortune, Stability of solutions for nonintegrable peakon equations, Physica D 269, 28-36 (2014).
  2. S. Lafortune, Stability of solitons on vortex filaments, Physics Letters A 377, 766-769 (2013).
  3. P. G. Kevrekidis, G.J. Herring, S. Lafortune and Q.E. Hoq, The higher-dimensional Ablowitz-Ladik model: from (non-)integrability and solitary waves to surprising collapse properties and more exotic solutions, Physics Letters A 376, 982-986 (2012).
  4. A. Calini, S. Keith, and S. Lafortune, Squared eigenfunctions and linear stability properties of closed vortex filaments, Nonlinearity 24, 3555-3583 (2011).
  5. S. Lafortune, J. Lega, and S. Madrid, Instability of local deformations of an elastic rod: numerical evaluation of the Evans function, SIAM Journal of Applied Mathematics 71, 1653-1672 (2011).
  6. N. Joshi, S. Lafortune, and A. Ramani, Hirota bilinear formalism and ultra-discrete singularity analysis, Nonlinearity 22, 871–887 (2009).
  7. T. Ivey and S. Lafortune, Spectral stability analysis for periodic traveling wave NLS solutions and CGL perturbations, Physica D 237, 1750-1772 (2008).
  8. G. Gottwald, J. Hornibrook, S. Balasuriya, and S. Lafortune, High Lewis number combustion wavefronts: a perturbative Melnikov analysis, SIAM Journal on Applied Mathematics 67, 464-486 (2007).
  9. A. Kasman and S. Lafortune, When is negativity not a problem for the ultradiscrete limit?, J. Math. Phys. 47 (2006).
  10. N. Joshi and S. Lafortune, Integrable ultra-discrete equations and singularity analysis,  Nonlinearity 19, 1295-1312, (2006).
  11. N. Joshi and S. Lafortune, How to detect integrability in Cellular Automata,  J. Phys. A 38, L499--L504 (2005).
  12. S. Lafortune, A. Goriely, and M. Tabor, The dynamics of stretchable rods in the inertial case, Nonlinear Dynam. 43,  173--195 (2006).
  13. S. Lafortune and J. Lega, Spectral stability of local deformations of an elastic rod: Hamiltonian formalism, SIAM Journal of Mathematical Analysis 36, 1726–1741 (2005).
  14. M.A. Agrotis, S. Lafortune and P.G. Kevrekidis, On a Discrete Version of the Korteweg-de Vries Equation, Discrete Contin. Dyn. Syst., suppl., 22-29 (2005).
  15. S. Lafortune and A. Goriely, Singularity confinement and algebraic integrability, Journal of Mathematical Physics 45, 1191-1208 (2004).
  16. S. Lafortune and J. Lega, Instability of local deformations of an elastic rod, Physica D 182, 103-124 (2003).
  17. S. Lafortune, A. Ramani and B. Grammaticos, The last remake of the Gambier mapping, Physica A 317, 383-390 (2003).
  18. A. Ramani, B. Grammaticos, S. Lafortune,  The discrete Chazy III system of Labrunie-Conte is not integrable, Journal of Physics A 35, 7943-7946 (2002).
  19. S. Lafortune, S. Tremblay and P. Winternitz, Symmetry classification of diatomic molecular chains, Journal of Mathematical Physics 42,  pp. 5341-5357 (2001).
  20. S. Lafortune, A.S. Carstea, A. Ramani, B. Grammaticos, Y. Ohta, Integrable third-order mappings and their growth properties, Regular and Chaotic Dynamics 6, 443--448 (2001).
  21. A. Ramani, B. Grammaticos, S. Lafortune and Y. Ohta, Linearizable mappings and the low-growth criterion, Journal of Physics A 33, L287-L292 (2000).
  22.  L. Martina, S. Lafortune and P. Winternitz, Point symmetries of generalized Toda field theories. II. Symmetry reduction, Journal of Physics A 33, 6431-6446 (2000).
  23. S. Lafortune, P. Winternitz, L. Martina, Point symmetries of generalized Toda field theories, Journal of Physics A 33, 2419-2435 (2000).
  24. S. Lafortune, B. Grammaticos, A. Ramani and Winternitz, Discrete systems related to some equations of the Painlevé-Gambier classification, Physics Letters A 270, 55-61 (2000).
  25.  D. Gómez-Ullate, S. Lafortune, P. Winternitz, Symmetries of discrete dynamical systems involving two species, Journal of Mathematical Physics 40, 2782--2804 (1999).
  26. S. Lafortune, B. Grammaticos and A. Ramani, Discrete and Continuous Linearizable Equations, Physica A 268, 129-141 (1999).
  27. A. Ramani, B. Grammaticos, K.M. Tamizhmani, and S. Lafortune, Again, linearizable mappings, Physica A 252, 138--150 (1998).
  28. A. Ramani, B. Grammaticos, and S. Lafortune, Schlesinger transformations for linearizable equations, Letters in Mathematical Physics 46, 131--145 (1998).
  29. S. Lafortune, B. Grammaticos, A. Ramani, Constructing integrable third-order systems: the Gambier approach, Inverse Problems 14, 287--298 (1998).
  30. S. Lafortune, P. Winternitz, and C. R. Menyuk, Solutions to the optical cascading equations, Physical Review E 58, 2518-2525 (1998).
  31. B. Grammaticos, A. Ramani, K.M. Tamizhmani and S. Lafortune, The Gambier Mapping, Revisited, Physica A 253, 260-270 (1998).
  32. S. Lafortune, Superposition formulas for pseudo-orthogonal matrix Riccati equations, Canadian Journal of Physics 75, 345-355 (1997).
  33. S. Lafortune and P. Winternitz, Superposition formulas for pseudounitary matrix Riccati equations, Journal of Mathematical Physics 37, 1539--1550 (1996).
  34. R. Marchand, S. Lafortune and X. Bonnin, Average Ion approximation for modelling impurity transport in tokamaks, Computer Physics Communications 76, 203-214 (1993).