@article{DAN_1960_133_3_a23,
     author = {\`E. Ya. Gren and G. Ya. Vanag},
     title = {Cyclopenten-4-dione-1,3},
     journal = {Doklady Akademii Nauk},
     pages = {588--591},
     publisher = {mathdoc},
     volume = {133},
     number = {3},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_133_3_a23/}
}