| Moving coframes: II. Regularization and theoretical foundations M Fels, PJ Olver Acta Applicandae Mathematica 55, 127-208, 1999 | 513 | 1999 |
| Moving coframes: I. A practical algorithm M Fels, PJ Olver Acta Applicandae Mathematica 51, 161-213, 1998 | 444 | 1998 |
| Moving coframes: I. A practical algorithm M Fels, PJ Olver Acta Applicandae Mathematica 51, 161-213, 1998 | 442 | 1998 |
| The equivalence problem for systems of second‐order ordinary differential equations ME Fels Proceedings of the London Mathematical Society 3 (1), 221-240, 1995 | 95 | 1995 |
| The principle of symmetric criticality in general relativity ME Fels, CG Torre Classical and Quantum Gravity 19 (4), 641, 2002 | 60 | 2002 |
| Group invariant solutions without transversality IM Anderson, ME Fels, CG Torre Communications in Mathematical Physics 212, 653-686, 2000 | 57 | 2000 |
| The inverse problem of the calculus of variations for scalar fourth-order ordinary differential equations M Fels Transactions of the American Mathematical Society 348 (12), 5007-5029, 1996 | 56 | 1996 |
| Non-reductive homogeneous pseudo-Riemannian manifolds of dimension four ME Fels, AG Renner Canadian Journal of Mathematics 58 (2), 282-311, 2006 | 55 | 2006 |
| Exterior differential systems with symmetry IM Anderson, ME Fels Acta Applicandae Mathematicae 87 (1-3), 3, 2005 | 50 | 2005 |
| Non-factorizable separable systems and higher-order symmetries of the Dirac operator M Fels, N Kamran Proceedings of the Royal Society of London. A. Mathematical and Physical …, 1990 | 41 | 1990 |
| Superposition formulas for exterior differential systems IM Anderson, ME Fels, PJ Vassiliou Advances in Mathematics 221 (6), 1910-1963, 2009 | 38 | 2009 |
| On relative invariants M Fels, PJ Olver Mathematische Annalen 308 (4), 701, 1997 | 33 | 1997 |
| Symmetry reduction of variational bicomplexes and the principle of symmetric criticality IM Anderson, ME Fels American Journal of Mathematics 119 (3), 609-670, 1997 | 31 | 1997 |
| Moving frames and coframes M Fels, PJ Olver Algebraic Methods in Physics: A Symposium for the 60th Birthdays of Jiří …, 2001 | 26 | 2001 |
| Integrating scalar ordinary differential equations with symmetry revisited ME Fels Foundations of Computational Mathematics 7, 417-454, 2007 | 23 | 2007 |
| Some applications of Cartan's method of equivalence to the geometric study of ordinary and partial differential equations ME Fels McGill University, 1993 | 16 | 1993 |
| Bäcklund transformations for Darboux integrable differential systems: examples and applications IM Anderson, ME Fels Journal of Geometry and Physics 102, 1-31, 2016 | 14 | 2016 |
| Bäcklund transformations for Darboux integrable differential systems IM Anderson, ME Fels Selecta Mathematica 21, 379-448, 2015 | 12 | 2015 |
| Transformations of Darboux integrable systems IM Anderson, ME Fels Differential Equations-Geometry, Symmetries and Integrability: The Abel …, 2009 | 10 | 2009 |
| Symmetry reduction of exterior differential systems and Bäcklund transformations for PDE in the plane IM Anderson, ME Fels Acta applicandae mathematicae 120, 29-60, 2012 | 9 | 2012 |
