Table 3.

The top ten contributing authors, countries, and organizations were subjected to a bibliographic coupling study.

Authors (TLS)	Organizations (TLS)	Countries (TLS)
Wang S (5)	Chinese Academy of Sci (123)	China (1836)
Zhang L (4)	University of Oulu (86)	United Kingdom (1044)
Buhari A (3)	Multimedia university (49)	Finland (783)
Li J (3)	Wenzhou University (38)	Malaysia (389)
Verma M (3)	Xiamen University (32)	India (385)
Happy S (2)	Monash university (30)	United States (379)
See J (2)	Tsinghua University (19)	Australia (282)
Lu H (1)	Southeast University (18)	France (282)
Ade gun I (0)	Shandong University (18)	Taiwan (161)
Allaert B (0)	Xian jiaotong University (16)	Indonesia (143)