1. A resistive change element array comprising: a plurality of word lines; a plurality of bit lines; a plurality of reference bit lines; a plurality of resistive change elements, wherein each resistive change element has a first terminal and a second terminal and wherein said first terminal of each resistive change element is in electrical communication with a word line and said second terminal of each resistive change element is in electrical communication with a bit line; a plurality of resistive reference elements, wherein each resistive reference element has a first terminal and a second terminal and wherein said first terminal of each resistive reference element is in electrical communication with a word line and said second terminal of each resistive reference element is in electrical communication with a reference bit line; wherein each of said resistive change elements is adjustable between a first non-volatile resistive state and a second non-volatile resistive state responsive to electrical stimuli applied to said plurality of word lines and said plurality of bit lines; and wherein each of said resistive reference elements has a fixed electrical resistance value that is less than said first non-volatile resistive state and greater than said second non-volatile resistive state.