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- Thesis : " Differential Geometric Methods in Partial Differential Equations " , Berkeley University Press, 150 pages, 1965.
- "Invariants of Pfaffian systems", Trans. Amer. Math. Soc. 126 (1967), 514-533.
- " Some Applications of the Retraction Theorem in Exterior Algebra ", J. Diff. Geom. 2 (1968), 25-31.
- "The Cauchy Problem for Pfaffian Systems ", Comm. Pure and App. Math. 22 (1969), 587-596.
- " A Differential Geometric Generalization of Characteristics ", Comm. Pure and App. Math. 22 (1969), 597-626.
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- " Invariant Theory ", Bull. Amer. Math. Soc. 12 (1980), 246-256.
- " Exterior Differential Systems ", (joint with R. Bryant, S.S. Chern and P. Griffiths), China Scientific Press, publication no. 3.
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^{k}(E) ", (joint with W. Shadwick), Rocky Mountain J. Math. 17(1987), 19-21. - " Differential Equations and the Method of Equivalence ", Proc. IEEE Conference on Decision and Control, Fort Lauderdale, Fla. Dec. 1985, 1777-1778.
- " Overdetermined Equivalence Problems with an Application to Feedback Equivalence ", (joint with W. Shadwick), Proc. San Antonio Conf. on Diff. Geom., Contemporary Mathematics, Amer. Math. Soc., 111-120.
- " Feedback Equivalence of Control Systems ", (joint with W. Shadwick), Systems and Control Letters 8 (1987), 463-465.
- " The Principal Components Construction Applied to Affine Unimodular Repere Mobile ", Results in Mathematics 13 (1988), 235-239.
- " A Geometric Isomorphism with Applications to Closed Loop Controls ", (joint with W. Shadwick and G. Wilkens), SIAM Journal of Control 27 (1989), 1361-1368.
- " Feedback Equivalence and Symmetries of Brunowski Normal Forms ", (joint with W. Shadwick and G. Wilkens), Contemporary Mathematics, vol 97, Amer. Math. Soc., Providence 1989,115-130.
- " The Method of Equivalence and its Applications ", SIAM-CBMS Regional Conference Series in Applied Mathematics, vol. 58, 1989, 127 pages.
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- " Feedback Equivalence for General Control Systems ", (joint with W. Shadwick), Systems and Control Letters 15 (1990), 15-23.
- " Exterior Differential Systems ", (joint with R. Bryant, S.S. Chern, P. Griffiths and H. Goldschmidt), MSRI Pub. # 18, Springer, 1990, 525 pages.
- " An Algorithm for Feedback Linearization ", (joint with W. Shadwick), Diff. Geom. and its Apps. vol.1, no.2 (1991), 153-158.
- " Image Segmentation and Evaluation of Deformation Features ", (joint with Oliver, Pizer and Pryzwansky).
- " Symmetry and the Implementation of Feedback Linearization ", (joint with W. Shadwick), Systems and Control Letters 15 (1990), 25-33.
- " An Equivalence Problem for a 2-Form and a Vector Field in R
^{3}", (joint with W. Shadwick), CMS Proc. 12, Differential Geometry, Global Analysis and Topology (1992), 41-50. - " Evaluation of Cytological Deformation by Boundary Driven Energy Minimization ", (joint with Oliver, Pizer and Pryzwansky), in Information Processing in Medical Imaging, Wiley-Liss, NY, vol. 363 (1991), 355-358.
- " Characteristics and the Geometry of Hyperbolic Equations in the Plane ", (joint with N. Kamran), Jour. Diff. Equations., 104 (1993),60-116.
- " Classical geometries arising in feedback equivalence ", Proceedings of the 32nd IEEE Conference on Decision and Control,(1993),3437-3440.
- " The GS-algorithm for Exact Linearization to Brunovsky Normal Form ", (joint with W. Shadwick), IEEE Transactions on Automated Control, 37 (2) (1992), 224-230.
- " Ridges for Image Analysis ", (joint with D. Eberly,B. Mardo and S. Pizer), Journal of Math Imaging and Vision, 4 (1994), 353-373.
- " Generalized Spherical Functions on Projectively Flat Manifolds ", Results in Math. 27 (1995), 41-50.
- " Control Structures ", (joint with R. Bryant), Banach Center Publ. # 32, Warsaw, (1995), 111-121.
- " Normal forms and focal systems for determined systems of two first-order partial differential equations in the plane ", (joint with N. Kamran),Indiana Univ. Math. J. 44 (4)(1995), 1127-1162
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**Finsler Geometry**,Seattle 1995, in Contemp. Math. 196, Amer. Math. Soc., Providence, 1996, pages 227-229. - " A Pseudogroup Isomorphism between Control Systems and Certain Generalized Finsler Structures ", (joint with G. Wilkens), Proc. of the conference
**Finsler Geometry**, Seattle 1995, in Contemp. Math. 196, Amer. Math. Soc., Providence, 1996, page s 231-243. - " The Fundamental Theorems of Curves and Hypersurfaces in Centro-affine Geometry", (joint with George Wilkens), Bull. Belgian Math. Soc. Simon Stevin 4 (3) (1997),379-401.
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**Advances in Mathematical Sciences : CRM's 25 Years**, Montreal, PQ 1994,CRM Proc. Lecture Notes 11, Amer. Math. Soc., Providence 1996,215-230.