@article{Lucha:2020Lz, author = "Lucha, Wolfgang and Melikhov, Dmitri and Sazdjian, Hagop", title = "{Tetraquark properties at large $N_c$}", doi = "10.22323/1.374.0078", journal = "PoS", year = 2020, volume = "LC2019", pages = "078" }