3.7 months
9.1 months
n/a
3.0 rounds
2.0 reports
moderate
6.0 months
7.4 months
n/a
2.0 rounds
2.0 reports
effortless
1.5 months
1.6 months
n/a
2.0 rounds
3.0 reports
very difficult
1.7 months
3.6 months
n/a
2.0 rounds
2.0 reports
very easy
2.0 months
4.0 months
n/a
2.0 rounds
3.0 reports
very easy
1.5 months
3.3 months
n/a
2.5 rounds
2.5 reports
difficult
1.6 months
2.5 months
121 days
2.0 rounds
2.0 reports
easy
n/a
n/a
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n/a
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a