Eng, R.Y.N., Tsujita, M.J., Grodzinski, B. and Dutton, R.G.  1983.  Production of chrysanthemum cuttings under supplementary lighting and CO2 enrichment.  Hortscience 18: 878-879.

Gislerod, H.R. and Nelson, P.V.  1989.  The interaction of relative air humidity and carbon dioxide enrichment in the growth of Chrysanthemum x morifolium Ramat.  Scientia Horticulturae 38: 305-313.

Mortensen, L.M.  1984a.  Photosynthetic adaptation in CO2 enriched air and the effect of intermittent CO2 application on greenhouse plants.  Acta Horticulturae 162: 153-158.

Mortensen, L.M.  1984b.  The effect of nitrogen oxides (NOx) during CO2 enrichment on some greenhouse plants.  Acta Horticulturae 162: 285-287.

Mortensen, L.M.  1985.  Nitrogen oxides produced during CO2 enrichment. I. Effects on different greenhouse plants.  New Phytologist 101: 103-108.

Mortensen, L.M.  1986.  Nitrogen oxides produced during CO2 enrichment. III. Effects on tomato at different photon flux densities.  New Phytologist 104: 653-660.

Mortensen, L.M. and Moe, R.  1983.  Growth responses of some greenhouse plants to environment. VI. Effects of CO2 and artificial light on growth of Chrysanthemum morifolium Ramat.  Scientia Horticulturae 19: 141-147.