Study of Bc -→X(3872)π-(K-) decays in the covariant light-front approachWei Wang, Yue-Long Shen and Cai-Dian LüEur. Phys. J. C, 51 4 (2007) 841-847DOI: https://doi.org/10.1140/epjc/s10052-007-0334-3