@misc{misc2282fc19,
title   = {QCD Sum Rules Approach to the X; Y and Z States},
author = {Albuquerque, Raphael M. and Dias, Jorgivan M. and Khemchandani, K. P. and Zanetti, Carina M. and Navarra, Fernando Silveira and Nielsen, Marina and Martinez Torres, Alberto},
year = {2018}
}