@article {387,
	title = {A 1.5nW, 32.768kHz XTAL Oscillator Operational from 0.3V Supply},
	journal = {IEEE Journal of Solid-State Circuits (JSSC)},
	volume = {51},
	year = {2016},
	author = {A. Shrivastava and Akella, D. and B. H. Calhoun}
}
