Enlaces:
[1] http://www.mtz.sld.cu/pagina/2023/03/21/referencias-bibliograficas-2023
[2] http://www.mtz.sld.cu/pagina/2022/01/31/rb-2022
[3] http://www.mtz.sld.cu/pagina/2021/02/02/rb-2021
[4] http://www.mtz.sld.cu/pagina/2020/02/06/rb-2020
[5] http://www.mtz.sld.cu/pagina/2019/09/12/rb-2019
[6] http://www.mtz.sld.cu/pagina/2019/09/12/rb-2018
[7] http://www.mtz.sld.cu/pagina/2019/09/13/rb-2017
[8] http://www.mtz.sld.cu/pagina/2019/09/13/rb-2016