Lim Yong Fong, Shahidatul Sadiah, Ab Al-Hadi Ab Rahman, Muhammad Mun’im Ahmad Zabidi, and Mohd Usairy Syafiq, “Power-Efficient ASIC Implementation of Double SHA-256 for Proof of Work Mining”, Elektrika, vol. 24, no. 1, pp. 41–46, Apr. 2025.