Dear Satish Gummadi,

I suggest you to see links and attached files on subject.

https://hal.archives-ouvertes.fr/hal-01567360/document

http://webpages.lss.supelec.fr/perso/ortega/papers/Kreisselmeier-Engel.pdf

https://www.tandfonline.com/doi/abs/10.1080/00207721.2017.1381894?

scroll=top&needAccess=true&journalCode=tsys20

https://livrepository.liverpool.ac.uk/3007605/1/200833489_May2017.pdf

https://arxiv.org/pdf/2004.12061.pdf

Conference Paper Nonlinear observer design for one-sided Lipschitz systems

Best regards

Dear Satish Gummadi ;

Please read these articles:

1- Observer for Lipschitz nonlinear systems: mean value theorem and sector nonlinearity transformation

By Dalil Ichalal, Benoît Marx, Said Mammar, Didier Maquin, José Ragot

2- Nonlinear Systems and Control Lecture # 1 Introduction

https://www.egr.msu.edu/~khalil/NonlinearSystems/Sample/Lect_1.pdf

Best regards

- Examples and Counterexamples in Lipschitz Analysis

By Peter Fusek, Diethard Klatte, Bernd Kummer

- Nonlinear observer design for one-sided Lipschitz systems

By Masoud Abbaszadeh, H.J. Marquez