1. Oddsson, G.V., Unnthorsson, R.: Evaluating team performance in a student led multidisciplinary project course with the painter method. Int. J. Eng. Educ. 37(2), 433–445 (2021)
2. Bhimani, S.A., Komarlu, R.: Unusual coronary artery arrangement in D-transposition of the great arteries with ventricular septal defect. Cardiol. Young 31(1), 127–129 (2021)
3. Ding, X., Yang, K., Hu, H., et al.: Intelligent planning and arrangement of urban rail transit equipment resource occupation under maintenance mode. J. Intell. Fuzzy Syst. 41(9), 1–9 (2021)
4. Yan, J., Wang, L., Jia, B., et al.: Uniting GaN electronics and photonics on a single chip. J. Lightwave Technol. 39(19), 6269–6275 (2021)
5. Kang, Z., Zhu, K., Zhang, X., et al.: Pulse train triggered single dissipative kerr soliton in microresonator and application in terahertz rate optical clock recovery. J. Lightwave Technol. 39(11), 3511–3520 (2021)