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Sumper, Manfred and Berg, E. and Wenzl, S. and Godl, K. (1993) How a sex pheromone might act at a concentration below 10(-16) M. The EMBO journal 12 (3), pp. 831-836.
Sumper, Manfred and Berg, E. and Mengele, R. and Strobel, I. (1990) Primary structure and glycosylation of the S-layer protein of Haloferax volcanii. Journal of bacteriology 172 (12), pp. 7111-7118.