TY - Acta mathematica scientia,Series A A1 - Yiju Lei,Zujun Ou T1 - Lower Bounds for the Symmetric L2-Discrepancy of U-type Designs Y1 - 2022-12-26 JF - Acta mathematica scientia, Series A JO - Acta mathematica scientia,Series A SP - 1802 EP - 1811 VL - 42 IS - 6 UR - http://121.43.60.238/sxwlxbA N1 - ER -