previous work; aforementioned publication; ibid.
Refers to a book or publication previously mentioned or written by the same author. Used in formal, academic, or bibliographic contexts. 'Ibid.' is a specific bibliographic abbreviation.
I discussed this issue in detail in my previous work.
Please refer to the data in the aforementioned publication.
Compound of 前 (zen, 'previous') and 著 (cho, 'writing' or 'work'). The reading is on'yomi. The term is a straightforward Sino-Japanese compound.