| Authors Name |
|---|
| Uman Flores, Diego Armando [1] |
| Uribe Arias, Juan Carlos [1] |
| Usca Abal, Milton [1] |
| Uscamaita Quispetupa, Marycel [1] |
| Uscamaita Quispetupa,Rossy [1] |
| Uscamayta Lines, Jonathan [1] |
| Uscamayta Quispe, Efrain [1] |
| Utrilla Mego, Limberg Walter [3] |
