@article{paperid:1095617,
author = {Akbarian, Majid and Pariz, Naser and Aghileh Heydar},
title = {Introducing some classes of stable systems without any smooth Lyapunov functions},
journal = {Communications in Nonlinear Science and Numerical Simulation},
year = {2023},
volume = {126},
month = {November},
issn = {1007-5704},
pages = {107485--107498},
			numpages = {13},
keywords = {Smooth Lyapunov functions
Lyapunov stability
Nonlinear dynamical systems
Limit cycles
Invariant sets},
}