1. Abel, W. O 1956a: Die Austrocknungsresistenz der Laubmoose. S.ber. Ost. Akad. Wiss.. math.-naturw. KI. 10, 105–107.
2. Abel, W. O 1956b: Die Austrocknungsresistenz der Laubmoose. S.ber. Ost. Akad. Wiss., math.-naturw. K1. 165, 619–707.
3. Allen, R. M., 1955: Foliage treatments improve survival of longleaf pine plantings. J. For. 53, 724–727.
4. Amiashani, M. C., and F. L. Patterson, 1956: Development of a standard artificial freezing technique for evaluating cold resistance of oats. Agron. J. 48, 181–184
5. Anderson, L. E., and P. F. Boubdeau, 1955: Water relations in two species of ter-restrial mosses. Ecology 36, 205–212.