@article{IM2_2010_74_1_a3,
     author = {S. G. Tankeev},
     title = {On the standard conjecture of {Lefschetz} type for complex projective threefolds},
     journal = {Izvestiya. Mathematics},
     pages = {167--187},
     year = {2010},
     volume = {74},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2010_74_1_a3/}
}