Covariant tensor formalism for partial-wave analyses of ψ decays into γB¯, γγV and ψ(2s)↦γχc0,1,2 with χc0,1,2↦K¯πand 2π+2π-Sayipjamal Dulat and Bing-Song ZouEur. Phys. J. A, 26 1 (2005) 125-134DOI: https://doi.org/10.1140/epja/i2005-10140-1