Zhonghua Li Xinghua Sun Ting Yan Dong Yang Guiliang Feng Key Technology for Food-Safety Traceability Based on a Combined Two-Dimensional Code. 139-148 2023 April 19 J. Inf. Process. Syst. 2 https://doi.org/10.3745/JIPS.04.0267 db/journals/jips/jips19.html#LiSYYF23