| Author(s) | Gagarina, Natalia, Annegret Klassert & Nathalie Topaj |
| Date of publication | 2009 |
| Compilation title | Proceedings 'Aktual'nye problemy rečevogo i lingvističeskogo razvitija detej doškol'nogo i mladšego kol'nogo vozrasta' |
| Editor(s) | Natalia V. Astachova (ed.) |
| Pages | 155-158 |
| Publisher | Kartua_x0001_ |
| Place | Orjol |