LAMONTAGNE, L. - BIGRAS, Francine J. - MARGOLIS, Hank A. Chlorophyll fluorescence and CO2 assimilation of black spruce seedlings following frost in different temperature and light conditions. In Tree Physiology. - Victoria : Heron Publishing, 2000, vol. 20, s. 249-255Error: read handle in (rep.epca.fmtISO690).fmtXDatabaze.