@article {967,
	title = {A novel method for digital monitoring of frequency deviation in power systems},
	journal = {Int. Nat. Journal of Electronics},
	volume = {vol. 56 },
	year = {1984},
	pages = {pp. 127 - 134},
	author = {V. K. Govindan and C. Velayudhan and M V Vydian}
}
