@article{CHFMJ_2021_6_3_a6,
     author = {B. Chaouchi and V. E. Fedorov and M. Kosti\'c},
     title = {Monotonicity of certain classes of functions related with {Cusa~---} {Huygens} inequality},
     journal = {\v{C}el\^abinskij fiziko-matemati\v{c}eskij \v{z}urnal},
     pages = {331--337},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CHFMJ_2021_6_3_a6/}
}