1. Blum MS (1981) Chemical Defenses of Arthropods. New York: Academic Press
2. Blum MS (1987) Specifity of pheromonal signals: a search for its recognitive bases in terms of a unified chemisociality. Pp 401?405in Eder J, Rembold H (eds) Chemistry and Biology of Social Insects. München: J Peperny
3. Brandsma L (1988) Preparative Acetylenic Chemistry. Amsterdam, Oxford, New York, Tokyo: Elsevier
4. Brian AD (1952) Division of labour and foraging inBombus agrorum Fabricius. J Anim Ecol 21:223?240
5. Brown CA, Vijay KA (1973) ?P-2 Nickel? catalyst with ethylenediamine, a novel system for highly stereospecific reduction of alkynes to cis-olefines. J Chem Soc: 553?554