Article Abraham, George; Cornelius, J. Samuel (2003)
Observational Astronomy. Indian Journal of History of Science (p. 367). (/isis/citation/CBB000600461/) unapi

Article Abraham, George (1997)
Variable radius epicycle model. Indian Journal of History of Science (pp. 135-138). (/isis/citation/CBB000074047/) unapi

Article Abraham, George (1997)
Ancient and medieval star catalogues. Indian Journal of History of Science (pp. 47-52). (/isis/citation/CBB000074058/) unapi

Article Abraham, George (1991)
Mean sun and moon in ancient Greek and Indian astronomy. Indian Journal of History of Science (pp. 383-387). (/isis/citation/CBB000050602/) unapi

Article Abraham, George (1986)
The motion of the moon in the Romaka Siddhānta. Archive for History of Exact Sciences (pp. 325-328). (/isis/citation/CBB000043046/) unapi

Article Abraham, George (1985)
Theories for the motion of the sun in the Pañcasiddhāntikā. Archive for History of Exact Sciences (pp. 221-230). (/isis/citation/CBB000048399/) unapi

Article Abraham, George (1984)
The motion of Mars in Egyptian planetary tables. Archive for History of Exact Sciences (pp. 1-6). (/isis/citation/CBB000028396/) unapi

Article Abraham, George (1984)
Length of the year in pre-epicyclic planetary theory. Archive for History of Exact Sciences (pp. 189-195). (/isis/citation/CBB000011783/) unapi

Article Abraham, George (1982)
Algebraic formulae for the moon, Saturn and Jupiter in Pancasiddhantika. Archive for History of Exact Sciences (pp. 287-297). (/isis/citation/CBB000021588/) unapi

Article Abraham, George (1981)
The gnomon in early Indian astronomy. Indian Journal of History of Science (pp. 215-218). (/isis/citation/CBB000022058/) unapi

Article Abraham, George (1980)
The motion of the sun in the Vasistha Siddhānta. Archive for History of Exact Sciences (pp. 1-3). (/isis/citation/CBB000007388/) unapi