1. APHA. (1980). Standard methods for the examination of water and wastewater, 15th ed., Washington D.C.
2. Boa, J. and A. LeDuy (1982). Can. J. Chem. Eng. 60,532?537.
3. LeDuy, A. and R. Samson (1982). Biotech. Letters 4,303?306.
4. LeDuy, A. and N. Th�rien (1979). Can. J. Chem. Eng. 57.
5. Samson, R. (1983). Bioconversion du CO, en CH 4 parl'interm�diaire de l'algueSpirulina maxima et du proc�d� de digestion ana�robie: Etude de faisabilit� technique. Th�se Ph.D., Universit� Laval, Qu�bec, Canada, 243p.