@article{DAN_1985_281_2_a10,
     author = {A. A. Malygin and A. N. Penin and A. V. Sergienko},
     title = {Space-time grouping of photons in spontaneous parametric
},
     journal = {Doklady Akademii Nauk},
     pages = {308--313},
     publisher = {mathdoc},
     volume = {281},
     number = {2},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_281_2_a10/}
}