@article{VUU_2013_4_a6,
     author = {A. S. Karavaev and S. P. Kopysov},
     title = {A refinement of unstructured quadrilateral and mixed meshes},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {62--78},
     publisher = {mathdoc},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2013_4_a6/}
}