It should be noted that the terms horizontal and vertical, and any reference to a dimension or coordinate system are provided solely for facilitating {TAIL ~ an understanding} of {HEAD ~ the three dimensional crossbar array} and the fabrication method thereof 
It should be noted that the terms horizontal and vertical , and any reference to a dimension or coordinate system are provided solely for facilitating { TAIL ~ an understanding } of { HEAD ~ the three dimensional crossbar array } and the fabrication method thereof
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