GERSON, Elizabeth A. - KELSEY, Rick G. Variation of piperidine alkaloids in ponderosa (Pinus ponderosa) and lodgepole pine (P. contorta) foliage from central Oregon. In Journal of Chemical Ecology, 1998, vol. 24, no.5, s. 815-827Error: read handle in (rep.epca.fmtISO690).fmtXDatabaze. Dostupné na internete: <https://link.springer.com/article/10.1023/A:1022369416745>