D. M. Pérez
Higher Institute of Technologies and Applied Sciences (InSTEC), University of Havana (UH), Avenida Salvador Allende y Luaces, Quinta de Los Molinos, Plaza de la Revolución, 10400 Havana, Cuba Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Avenida Professor Luiz Freire, 1000 Recife, PE, Brasil
Brazil

L. H. Pardo
Higher Institute of Technologies and Applied Sciences (InSTEC), University of Havana (UH), Avenida Salvador Allende y Luaces, Quinta de Los Molinos, Plaza de la Revolución, 10400 Havana, Cuba
Cuba

D. M. Pérez
Higher Institute of Technologies and Applied Sciences (InSTEC), University of Havana (UH), Avenida Salvador Allende y Luaces, Quinta de Los Molinos, Plaza de la Revolución, 10400 Havana, Cuba
Cuba

L. P. R. Garcia
Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Avenida Professor Luiz Freire, 1000 Recife, PE, Brasil
Brazil

D. E. M. Lorenzo
Higher Institute of Technologies and Applied Sciences (InSTEC), University of Havana (UH), Avenida Salvador Allende y Luaces, Quinta de Los Molinos, Plaza de la Revolución, 10400 Havana, Cuba
Cuba

C. A. B. de Oliveira Lira
Centro Regional de Ciências Nucleares (CRCN-NE), Cidade Universitária, Avenida Professor Luiz Freire 200, Recife, PE, Brasil
Brazil