Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v1.c5.14

v1.c5.14

Every statement about the contents of old works made in this book without citing some authority is based on my reading of these works; and I have most of such important works on astronomy in my possession. Every conclusion purporting to be the result of mathematical calculation, has been arrived at from careful calculations personally made by me and I am sure that they are correct; still as it is human to err, some errors might have crept in through oversight. In certain cases the necessary works were not available to me for reading and I had to rely on their authors and works while writing about their contents; in all such cases I have cited the authority for my statements at the proper places. Again, where extracts have been taken from other books bodily or in a summarized form I have cited chapter and verse for every quotation. Except for this, not a single line of this book is based or borrowed from any other book or its translation.