@article {35369,
	title = {Novit. Bot. Univ. Carol.  31, 1967},
	year = {Submitted}
}
@article {35370,
	title = {Deutsche Bot. Monatsschr. 22: 50, 1911},
	year = {Submitted}
}
@article {35371,
	title = {Oesterr. Bot. Z. 64: 233, 1914},
	year = {Submitted}
}
@article {26225,
	title = {Trudy Glavn. Bot. Sada 39: 36, 1923},
	year = {Submitted}
}
