@article{IM2_2024_88_2_a8,
     author = {I. G. Tsar'kov},
     title = {$\theta$-metric function
},
     journal = {Izvestiya. Mathematics },
     pages = {369--388},
     publisher = {mathdoc},
     volume = {88},
     number = {2},
     year = {2024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2024_88_2_a8/}
}