Muraev, E. B. (1978), "Borel summation of n-multiple series, and entire functions associated with them", Akademiya Nauk SSSR, 19 (6): 1332–1340, 1438, MR0515185. Muraev observes that Borel summation is translative in one of the two directions: augmenting a series by a zero placed at its start does not change the summability or value of the series. However, he states "the converse is false".