Identifying quasars with astrometric and mid-infrared methods from APOP and ALLWISESufen Guo, Zhaoxiang Qi, Shilong Liao, Zihuang Cao, Mario G. Lattanzi, Beatrice Bucciarelli, Zhenghong Tang and Qing-Zeng YanA&A, 618 (2018) A144DOI: https://doi.org/10.1051/0004-6361/201833135
