00543naa#a2200181#i#450# EN\\bibl\56986 /en/manage/index 20241111022151.1 2542-1840 20230131b2023####ek#y0engy0150####ca RU Attention Span in Preteen Boys and Girl Journal article Kemerovo Kemerovo State University 2023 5 с. Journal article local Tsigichko Elena Aleksandrovna Krivoruchko Mayya Olegovna test.editorum.ru /en/manage/index