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1.	FAUNA ROMANIEI, INSECTA, Vol. X, Fasc. 6, COLEOPTERA - Eugen NITU
2.	THE FAUNA OF SOIL BEETLES (EDAPHIC COLEOPTERA) AS A SENSITIVE INDICATOR OF EVOLUTION AND CONSERVATION OF ECOSYSEMS. A STUDY ON THE ALTITUDINAL GRADIENT IN THE RODNEI MOUNTAINS BIOSPHERE RESERVE (THE CARPATHIANS) - Eugent NITU, Augustin NAE, Ionut POPA
3.	The first study on the beetle fauna in the Giumalau spruce primeval forest (Eastern Carpathians, Romania), mainly based on a quantitative analysis of terrestrial and saproxylic species - Eugen NITU, Nicolai OLENICI