@article{BGUMI_2019_3_a11,
     author = {V. M. Kotov and N. S. Bogdanova},
     title = {Bunch technique for $semionline$ with two groups of items},
     journal = {Journal of the Belarusian State University. Mathematics and Informatics},
     pages = {134--138},
     publisher = {mathdoc},
     volume = {3},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/BGUMI_2019_3_a11/}
}