@article{ADM_2013_16_2_a3,
     author = {O. Gnatiuk and N. Golovashchuk},
     title = {Differential graded categories associated with the critical semi-definite quadratic forms},
     journal = {Algebra and discrete mathematics},
     pages = {188--200},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2013_16_2_a3/}
}