@article {229,
	title = {Galanthamine distribution in Bulgarian Galanthus spp.},
	journal = {Pharmazie},
	volume = {58},
	year = {2003},
	pages = {935 - 936},
	author = {Sidjimova, B. and Berkov, S and Popov, S. and Evstatieva, L.}
}
@article {225,
	title = {Intraspecific variability in the alkaloid metabolism of Galanthus elwesii},
	journal = {Phytochemistry},
	volume = {65},
	year = {2004},
	month = {03/2004},
	pages = {579 - 586},
	issn = {00319422},
	doi = {10.1016/j.phytochem.2003.12.013},
	author = {Berkov, S}
}
