@article{DAN_1972_202_1_a13,
     author = {Yu. V. Burkin},
     title = {Submodel similarity and planning relations for single indirect experiments},
     journal = {Doklady Akademii Nauk},
     pages = {54--55},
     publisher = {mathdoc},
     volume = {202},
     number = {1},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_1_a13/}
}