The Ch'i-yao jang-tsai-chüeh and its ephemerides / by Michio Yano.
Abstract:
"The Chinese text of the "Ch'i-yao jang-tsai-chüeh" (Formulas to prevent the disasters caused by the seven luminaries) was compiled in the early 9th century by a Brahmana priest who hailed from western India. His name is written as Chin Chu Cha, but I have been unable to identify its Sanskrit equivalent."
Centaurus Vol. 29 (1986), p. 28-35