@article {16197,
	title = {Trudy Imperatorskago S.-Peterburgskago Botaniceskago Sada},
	year = {1880},
	author = {Regel}
}
@book {16048,
	title = {Trudy Imperatorskago S.-Peterburgskago Botaniceskago Sada},
	volume = {3},
	year = {1875},
	author = {Regel}
}
@book {15848,
	title = {Trudy Imperatorskago S.-Peterburgskago Botaniceskago Sada},
	year = {1887},
	author = {Regel}
}
@book {14374,
	title = {Bull.Soc.Nat.Moscou},
	volume = {34},
	year = {1961},
	author = {Regel}
}
