1. Boone WR, Schoffeniels E (1979) Haemocyanin synthesis during hypoosmotic stress in the shore crab,Carcinus maenas. Comp Biochem Physiol 63 B:207–214
2. Finney DJ (1964) Probit analysis. Cambridge University Press, London
3. Hudson PV, Whittle DM Wong PTS, Borgamann U, Thomas RL, Chau YK, Nriagu JO, Hallett DJ (1984) Lead contamination of the great lakes and its potential effects on aquatic biota. In: Nriagu JO, Simons (eds) Toxic contaminants in the great lakes, John Wiley and Sons Inc.
4. Holcombe GW, Benoit DA, Leonard EN, Mckim JM (1976) Long term effects of lead exposure on three generations of brook trout,Salvelinus fontinalis. J Fish Res Board Can 33:1731–1741
5. Jones JD (1972) Comparitive physiology of respiration. Edward Aynoid publisher Ltd, London