《明史·志·卷九》
按：《授时历》对于日月五星运行度数的增减，都是用垛积招差的方法来计算，这种方法巧妙地与天体的运行相合，与西方人用小轮推算的方法，殊途同归。
按《授时历》于七政盈缩，并以垛积招差立算，其污七巧合天行，与西人用小轮推步之法，殊途同归。
According to: "Shou Shili" the increase and decrease of the running degrees of the sun, moon and five stars are calculated by the method of垛积招差. This method is cleverly combined with the operation of celestial bodies, which is different from the method of推算 using small wheels used by Westerners.