@article {778,
	title = {Der genitalapparat der tricladen und seine beziehungen zu ihrer allgemeinen morphologie, phylogenie, {\"o}kologie und verbreitung},
	journal = {Zeitschrift f{\"u}r morphologie und {\"o}kologie der Tiere},
	volume = {11},
	number = {5},
	year = {1928},
	month = {09/1928},
	pages = {570-612},
	issn = {0372-9389},
	doi = {10.1007/BF02424587},
	url = {http://link.springer.com/article/10.1007\%2FBF02424587},
	author = {Josef Meixner}
}
@article {387,
	title = {The freshwater planarians of the Phillipines},
	journal = {Transactions of the American Microscopical Society},
	volume = {47},
	year = {1928},
	pages = {356-365},
	url = {http://www.jstor.org/discover/10.2307/3222204?uid=3737952\&uid=2134\&uid=2129\&uid=2\&uid=70\&uid=4\&sid=21101875673411},
	author = {Sivickis, P.B.}
}
