A Comprehensive Survey on Blockchain in Industrial Internet of Things: Motivations, Research Progresses, and Future Challenges. - Ru Huo; Shiqin Zeng; Zhihao Wang; Jiajia Shang; Wei Chen 131; Tao Huang 005; Shuo Wang 006; F. Richard Yu; Yunjie Liu 001 (IEEE Commun. Surv. Tutorials, 2022)