@article{article4a485e9d,
title   = {The dissimilar chemical composition of the planet-hosting stars of the XO-2 binary system},
author = {Ramírez, I and Khanal, S and Aleo, P and Sobotka, A and Liu, F and Casagrande, L and Moreno, Jorge Luiz Meléndez and Yong, D and Lambert, D. L and Asplund, M},
year = {2015},
doi = {10.1088/0004-637X/808/1/13},
journal   = {The Astrophysical Journal}
}