* separar palavras-chave com vírgula
Melhores sites academics 1-15:
1.
academia.edu 
492,401

2.
umich.edu 
262,263

3.
utah.edu 
237,920

4.
mendeley.com 
211,075

5.
usf.edu 
193,873

6.
ucsb.edu 
122,979

7.
ua.edu 
89,721

8.
aktu.ac.in 
75,644

9.
metu.edu.tr 
70,891

10.
researchmap.jp 
53,328

11.
nmsu.edu 
52,476

12.
lehigh.edu 
51,053

13.
wtamu.edu 
37,918

14.
fgcu.edu 
25,513

15.
careerage.com 
23,544

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