id	keyword
ajase-4693	oil
ajase-4693	model
ajase-4693	garch
ajase-4693	crude
ajase-4693	volatility
ajase-4693	price
ajase-4693	forecasting
ajase-4693	garch models
ajase-4693	series
ajase-4693	oil price
ajase-4693	information
ajase-4693	value
ajase-4693	nigeria
ajase-4693	data
ajase-4693	returns
ajase-4693	table
ajase-4693	error
ajase-4693	mean
ajase-4693	type