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Tinus, R. W. (1981). Effects of Extended Photoperiod on Southern Rocky Mountain Engelmann Spruce and Douglas-fir. Tree Planters' Notes, 32(4).
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Lawrence, B. K., & Fehr, W. R. (1981). Reproductive Response of Soybeans to Night Interruption1. Crop Science, 21(5), 755.
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Raven, J. A., & Cockell, C. S. (2006). Influence on photosynthesis of starlight, moonlight, planetlight, and light pollution (reflections on photosynthetically active radiation in the universe). Astrobiology, 6(4), 668–675.
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Apostol, K., Dumroese, R. K., Pinto, J. R., & Davis, A. S. (2015). Response of conifer species from three latitudinal populations to light spectra generated by light-emitting diodes and high-pressure sodium lamps. Can. J. For. Res., 45(12), 1711–1719.
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Matsuda, R., Yamano, T., Murakami, K., & Fujiwara, K. (2016). Effects of spectral distribution and photosynthetic photon flux density for overnight LED light irradiation on tomato seedling growth and leaf injury. Scientia Horticulturae, 198, 363–369.
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