@article {IOPORT.01454575,
    author       = {Litow, B.},
    title        = {On Hadamard square roots of unity.},
    year         = {2000},
    journal      = {Theoretical Computer Science},
    volume       = {237},
    number       = {1-2},
    issn         = {0304-3975},
    pages        = {447-454},
    publisher    = {Elsevier Science Publishers, Amsterdam},
    doi          = {10.1016/S0304-3975(99)00327-8},
    abstract     = {A series all of whose coefficients have unit modulus is called a Hadamard square root of unity. We investigate and partially characterize the algebraic Hadamard square roots of unity. The investigation makes use of a result about the asymptotic behavior of the coefficients of algebraic series and the Weyl--von Neumann theorem.},
    reviewer     = {Wolfram Koepf (Kassel)},
    identifier   = {01454575},
}