Krifa M., Bachelier B., Frydrych R., Hofs J.L.. 1998. In : Summaries of the WCRC-2 and cotton contamination : papers presented at a technical seminar at the 57th plenary meeting of the International Cotton Advisory Committee, Santa Cruz de la Sierra, Bolivia, october 1998. s.l. : s.n., 4 p.. World Cotton Research Conference. 2, 1998-09-06/1998-09-12, Athènes (Grèce).