@article{IM2_1994_43_2_a10,
     author = {V. A. Krasnov},
     title = {On~cohomology classes defined by the real points of a real algebraic $\operatorname{GM}$-surface},
     journal = {Izvestiya. Mathematics },
     pages = {385--395},
     publisher = {mathdoc},
     volume = {43},
     number = {2},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1994_43_2_a10/}
}