A Brief Overview of the Absolute Proper motions Outside the Plane catalog (APOP)
Journal article published in 2015 by
Zhaoxiang Qi,
Yong Yu,
Richard L. Smart 
,
Mario G. Lattanzi,
Beatrice Bucciarelli,
Alessandro Spagna,
Brian J. McLean,
Zhenghong Tang,
Hugh R. A. Jones,
Roberto Morbidelli,
Luciano Nicastro ,
Alberto Vecchiato,
Ramachrisna Teixeira
,
Mario G. Lattanzi,
Beatrice Bucciarelli,
Alessandro Spagna,
Brian J. McLean,
Zhenghong Tang,
Hugh R. A. Jones,
Roberto Morbidelli,
Luciano Nicastro ,
Alberto Vecchiato,
Ramachrisna Teixeira
