Fourier transforms with nonnegative real part
Compositio Mathematica, Tome 18 (1967) no. 1-2, pp. 55-60. 
@article{CM_1967__18_1-2_55_0,
     author = {Art\'emiadis, Nicolas},
     title = {Fourier transforms with nonnegative real part},
     journal = {Compositio Mathematica},
     pages = {55--60},
     publisher = {P. Noordhoff N. V., Groningen},
     volume = {18},
     number = {1-2},
     year = {1967},
     mrnumber = {219994},
     zbl = {0177.40002},
     language = {en},
     url = {http://www.numdam.org/item/CM_1967__18_1-2_55_0/}
}
TY  - JOUR
AU  - Artémiadis, Nicolas
TI  - Fourier transforms with nonnegative real part
JO  - Compositio Mathematica
PY  - 1967
SP  - 55
EP  - 60
VL  - 18
IS  - 1-2
PB  - P. Noordhoff N. V., Groningen
UR  - http://www.numdam.org/item/CM_1967__18_1-2_55_0/
LA  - en
ID  - CM_1967__18_1-2_55_0
ER  - 
%0 Journal Article
%A Artémiadis, Nicolas
%T Fourier transforms with nonnegative real part
%J Compositio Mathematica
%D 1967
%P 55-60
%V 18
%N 1-2
%I P. Noordhoff N. V., Groningen
%U http://www.numdam.org/item/CM_1967__18_1-2_55_0/
%G en
%F CM_1967__18_1-2_55_0
Artémiadis, Nicolas. Fourier transforms with nonnegative real part. Compositio Mathematica, Tome 18 (1967) no. 1-2, pp. 55-60. http://www.numdam.org/item/CM_1967__18_1-2_55_0/

Artémiadis, N. [1] "Sur les transformées de Fourier et leurs applications aux séries et sur les fonctions typiquement réelles, d'ordre p" Annales Sc., de l'Ecole Normale Supérieure, (3), LXXIV. Fasc. 4 1958. | Numdam | Zbl

Artémiadis, N. [2] "Séries de Dirichlet et transformées de Fourier" Bull. Sc. Math., 2e série, 85, 1961, p. 73 à 85. | MR | Zbl

Bochner S., Chandrasekharan [3] "Fourier transforms" Princeton 1949. | Zbl