1. Chen, Y. (2019). Geometric Analysis of Differential-Algebraic Equations and Control Systems: Linear, Nonlinear and Linearizable. Ph.D. thesis, Normandie Université.
2. Geometric analysis of linear differential-algebraic equations via linear control theory;Chen;SIAM J. Control Optim.,2021
3. Chen, Y. and Trenn, S. (2020). On geometric and differentiation index of nonlinear differential-algebraic equations. Accepted by MTNS2020, preprint available from the website of the authors.
4. Chen, Y., Trenn, S., and Respondek, W. (2020). Normal forms and internal regularization of nonlinear differential-algebraic control systems. Submitted to publish, preprint available from the website of the authors.
5. Impasse points;Chua;Part I: numerical aspects. Int. J. Circuit Theory Appl.,1989