1. Bliss, L.C.: Caloric and lipid content in alpine tundra plants. Ecology 43, 753?757 (1962)
2. Boag, D.A., Kiceniuk, J.W.: Protein and caloric content of lodge pole pine needles. Forestry Chronicle 4, 1?4 (1968)
3. Cummins, K.W., Wuycheck, J.C.: Caloric equivalents for investigations in ecological energetics. Mitt. int. Ver. Limnol. 18, 1?158 (1971)
4. Golley, F.B.: Energy values of ecological materials. Ecology 42, 581?584 (1961)
5. Larcher, W., Schmidt, L., Tschager, A.: Starke Fettspeicherung und hoher Kaloriengehalt bei Loiseleuria procumbens (L.) Desv. Oecol. Plant. 8, 377?383 (1973)