an increasing trendP = 5.854E−14
The Mann-Kendall trend test showed no time-dependent trend in the publication time of articles ( P = 0.4162) but an increasing trend between the citation density and the time ( P = 5.854E−14) (Fig. 3 ).
The Mann-Kendall trend test showed no time-dependent trend in the publication time of articles ( P = 0.4162) but an increasing trend between the citation density and the time ( P = 5.854E−14) (Fig. 3 ).