@article{CRBIOL_2003__326_7_639_0,
     author = {Hager Jouili and Ezzedine El Ferjani},
     title = {Changes in antioxidant and lignifying enzyme activities in sunflower roots {(\protect\emph{Helianthus} annuus} {L.)} stressed with copper excess},
     journal = {Comptes Rendus. Biologies},
     pages = {639--644},
     publisher = {Elsevier},
     volume = {326},
     number = {7},
     year = {2003},
     doi = {10.1016/S1631-0691(03)00157-4},
     language = {en},
}