Navi, Keivan, Rabe’e Sharifi Rad, Mohammad Hossein Moaiyeri, and Amir Momeni. 2010. “A Low-Voltage and Energy-Efficient Full Adder Cell Based on Carbon Nanotube Technology”. Nano-Micro Letters 2 (2):114-20. https://doi.org/10.1007/BF03353628.