Fok and Hazewinkel call v(z) | = | 1/2 sqrt(π)Ai(z) w_1(z) | = | 2e^(i π/6) v(ω z) w_2(z) | = | 2e^(-i π/6) v(ω^(-1) z), where Ai(z) is an Airy function and ω = 2^(e π i/3), the Airy-Fock functions. On the other hand, Fock and Kiselev et al. (2003) and Babich and Buldyrev use the notation v(z) to denote twice the quantity v(z) in equation (1), and term this function (alone) "the Airy-Fock function."