@article{MZM_2024_116_2_a11,
     author = {E. D. Alferova and A. Yu. Popov},
     title = {Extremal positivity problem for integrals of sine series with monotone coefficients},
     journal = {Matemati\v{c}eskie zametki},
     pages = {316--320},
     publisher = {mathdoc},
     volume = {116},
     number = {2},
     year = {2024},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2024_116_2_a11/}
}