Martinez, A. Salcedo, R. Sansores, L.E. Medina, G. Gasque, L. <br/><br/>
A density functional study of the reactivity and stability of mixed copper complexes. Is hardness the reason? 

 -  2001. 
 - Vol. 40, no. 2, pp. 301-306. 
 = Inorganic Chemistry