@article{IVM_2008_11_a7,
     author = {V. \`E. Gheit and N. Zh. Gheit},
     title = {Criteria for the constant sign property for real polynomials on a segment},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {80--85},
     publisher = {mathdoc},
     number = {11},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2008_11_a7/}
}