@article{10_21136_CMJ_2021_0125_20,
     author = {Gelbukh, Irina},
     title = {Morse-Bott functions with two critical values on a surface},
     journal = {Czechoslovak Mathematical Journal},
     pages = {865--880},
     publisher = {mathdoc},
     volume = {71},
     number = {3},
     year = {2021},
     doi = {10.21136/CMJ.2021.0125-20},
     mrnumber = {4295251},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2021.0125-20/}
}