1 Boxus, P. and Quoirin, M., Laine, J. M.: Large scale propagation of strawbery plants from tissue culture, In: Appliend and fandamental aspects of plant cell, tissue, and organ culture.: pp. 130-143 (1977)
2 Damiano, C. and Laneri, U., Arias, E. J.: Nitrate and ammonium in strawberry micro propagagation preliminary results, Ann Ist Sper Fruttic 10: 35-42 (1979)