Effect of High Temperatures on the Growth, Free Proline Content and Some Antioxidants in Tobacco Plants Ivanov, S. ; Konstantinova, T. ; Parvanova, D. ; Todorova, D. ; Djilianov, D. ; Alexieva, V. Abstract Publication: Comptes Rendus de l'Academie Bulgare des Sciences Pub Date: 2001 Bibcode: 2001CRABS..54g..71I