SHANGGUAN Xuming, LI Jianlan. Research on the Influence of Digital Finance on Enterprise Scientific and Technological Innovation——Micro Evidence from the Perspective of Credit Financing ConstraintsJ. The journal of xinyang normal university (philosophy and social science edition), 2023, 43(1): 21-27. DOI: 10.3969/j.issn.1003-0964.2023.01.004