@article {1649,
	title = {Observations and experiments on regeneration in planarians},
	volume = {5},
	year = {1897},
	month = {1897//},
	author = {Randolph, H.}
}
@article {813,
	title = {Die Turbellarien Ost-Afrikas},
	number = {14},
	year = {1897},
	address = {Berlin},
	author = {Ludwig B{\"o}hmig}
}
@article {784,
	title = {Untersuchungen {\"u}ber die Organe der Lichtempfindung bei niederen Tieren. II: Die Augen der Platyhelminthen, insonderheit der tricladen Turbellarien},
	journal = {Zeitschrift f{\"u}r wissenschaftliche Zoologie},
	volume = {62},
	year = {1897},
	pages = {527-582},
	url = {https://archive.org/stream/zeitschriftfrwi621897seib$\#$page/526/mode/2up},
	author = {Hesse, R.}
}
