@article{MZM_1988_44_1_a12,
     author = {Le Tu Quoc Thang},
     title = {Structure of level surfaces of a {Morse} form},
     journal = {Matemati\v{c}eskie zametki},
     pages = {124--133},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1988_44_1_a12/}
}