@article {6221,
	title = {Reversible Data Hiding Using Prior Pixel Pairs in Two-Dimensional Histogram with Tri-Directional Modification  of Difference Histogram},
	journal = {IETE Technical Review },
	volume = {36},
	year = {2019},
	pages = {1-10},
	author = {Pinapati Anil and R. Padmavathy}
}
