Mahmod, Marwa Waleed. “Relative Intensity Distribution in the Rotational Structure for B1Σ+- A1Π and B1Σ+- X1Σ+ Electronic Systems of BeO Molecule”. Iraqi Journal of Physics, vol. 12, no. 23, Feb. 2019, pp. 51-58, https://doi.org/10.30723/ijp.v12i23.338.