The idea of a Lax pair-Part II: Continuum wave equations, Govind S Krishnaswami and T R Vishnu - Published in Resonance 26, 257 (2021).
The idea of a Lax pair-Part I: Conserved quantities for a dynamical system, Govind S Krishnaswami and T R Vishnu - Published in Resonance 25, 1705 (2020).
An introduction to Lax pairs and the zero curvature representation,
Govind S Krishnaswami and T R Vishnu (arXiv:2004.05791[nlin.SI]).