@article{IM2_2013_77_4_a1,
     author = {A. I. Bondal},
     title = {Operations on $t$-structures and perverse coherent sheaves},
     journal = {Izvestiya. Mathematics },
     pages = {651--674},
     publisher = {mathdoc},
     volume = {77},
     number = {4},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2013_77_4_a1/}
}