@book{67449,
	author = {Asmat Zahra and Department of Mathemetics and Statistics},
	title = {On Stability Analysis of VAN DER pol Nonic Duffing Oscillator},
	publisher = {Quest},
	year = {2021},
	address = {Nawabshah},
	url = {https://tinyurl.com/43a7fmfd}
}