@article {1767,
	title = {Die Pyuriden (Halocynthiiden) des Naturhistorischen Museums zu Hamburg},
	journal = {Jahrbuch der Hamburgischen Wissenschaflichen Australten. XXV. 1907},
	volume = {25},
	year = {1908},
	pages = {227-287},
	author = {Michaelsen, W.}
}
@article {1758,
	title = {Zur kenntnis der Didemniden},
	journal = {Abhande. Natur. wis. ver. Hamburg},
	volume = {21},
	year = {1919},
	pages = {1-44},
	author = {Michaelsen, W.}
}
@article {1668,
	title = {Ascidiae Diktyobranchiae und Ptychobranchiae},
	journal = {Fauna Sudwest-Australia},
	volume = {5},
	year = {1928},
	pages = {251-460},
	author = {Hartmeyer, R. and Michaelsen, W.}
}
@article {1667,
	title = {Revision von Heller{\textquoteright}s Ascidien-Typen aus dem Museum Godefroy},
	journal = {Zoologische Jahrbuecher (suppl) },
	volume = {8},
	year = {1905},
	pages = {71-120},
	author = {Michaelsen, W.}
}
@article {1650,
	title = {Die stolidobranchiaten der deutschen Tiefsee-Expedition},
	year = {1904},
	author = {Michaelsen, W.}
}
@article {277,
	title = {Die holosomen Ascidien des Magalhaenisch-Sudgeorgischen Gebiet},
	journal = {Zoologica},
	volume = {12},
	number = {31},
	year = {1900},
	pages = {1-148},
	author = {Michaelsen, W.}
}
@article {174,
	title = {Vorlaufige mitteilung uber einige Tunicaten aus dem magalhaenischen gebiet, sowie van Sud-Georgien},
	journal = {Zoologischer Anzeiger},
	volume = {21},
	year = {1898},
	pages = {363-371},
	author = {Michaelsen, W.}
}
@article {220,
	title = {Tunicata.},
	journal = {Beitrage zur Kenntnis der Meeresfauna Westafrikas. Hamburg},
	volume = {1},
	year = {1915},
	pages = {312-518},
	author = {Michaelsen, W.}
}
@article {171,
	title = {Ueber einigke westafrikanishce ascidien},
	journal = {Zoologischer Anzeiger},
	volume = {43},
	year = {1914},
	pages = {423-432},
	author = {Michaelsen, W.}
}
@article {500,
	title = {Die Tethyiden (Styeliden) des Naturhistorischen Museums zu Hamburg nebst Nachtrag und Anhang, einige andere Familien betreffend},
	journal = {Mitteilungen aus dem Naturhistorishen Museum in Hamburg},
	volume = {28},
	year = {1912},
	pages = {109-186},
	author = {Michaelsen, W.}
}
@inbook {192,
	title = {Tunicaten.},
	booktitle = {Ergebnisse der Hamburger Magalhaensischen Sammelreise},
	volume = {8},
	year = {1907},
	pages = {1-84},
	publisher = {L. Friederichsen \& Co.},
	organization = {L. Friederichsen \& Co.},
	edition = {5},
	address = {Hamburg},
	author = {Michaelsen, W.}
}
@article {147,
	title = {Revision der compositen Styeliden order Polyzinen},
	journal = {Jahrbuch der Hamburgischen Wissenchaftlichen Anstalten, supplement},
	volume = {21},
	year = {1904},
	pages = {1-124},
	author = {Michaelsen, W.}
}
@article {187,
	title = {The ascidians of the Cape Province of South Africa},
	journal = {Transactions of the Royal Society of South Africa},
	volume = {22},
	year = {1934},
	pages = {129-163},
	author = {Michaelsen, W.}
}
@article {428,
	title = {Ascidiae Krikobranchiae},
	journal = {Fauna Sudwest-Australiens},
	volume = {5},
	year = {1930},
	pages = {463-558},
	author = {Michaelsen, W.}
}
@article {418,
	title = {Ascidiae Diktyobranchiae und Ptychobranchiae},
	journal = {Fauna Sudwest-Aust.},
	volume = {5},
	year = {1928},
	pages = {251-460},
	author = {Hartmeyer, R. and Michaelsen, W.}
}
@article {389,
	title = {Einige neue westaustralische ptychobranchiate Ascidien},
	journal = {Zoologischer Anzeiger},
	volume = {71},
	year = {1927},
	pages = {193-203},
	author = {Michaelsen, W.}
}
@article {249,
	title = {Ascidiae Krikobranchiae von Neuseeland, den Chatham und den Auckland},
	journal = {Inseln Videnskabelige Meddelser fra Dansk Naturhistorisk Forening i Kjobenhavn},
	volume = {77},
	year = {1924},
	pages = {263-434},
	author = {Michaelsen, W.}
}
@article {214,
	title = {Neue und altbekannte Ascidien aus dem Reichsmuseum zu Stockholm.},
	journal = {Mitteilungen aus dem Zoologischen Museum in Hamburg},
	volume = {40},
	year = {1923},
	pages = {1-60},
	author = {Michaelsen, W.}
}
@article {332,
	title = {Ascidiae Ptychobranchiae und Distyobranchiae von Neuseeland und den Chatham-Inseln},
	journal = {Inseln Videnskabelige Meddelser fra Dansk Naturhistorisk Forening i Kjobenhavn},
	volume = {73},
	year = {1922},
	pages = {359-498},
	author = {Michaelsen, W.}
}
@article {353,
	title = {Ascidien vom Westlichen Indischen Ozean aus dem Reichmuseum zu Stockholm},
	journal = {Arkiv foer Zoologi},
	volume = {13},
	number = {23},
	year = {1921},
	pages = {1-25},
	author = {Michaelsen, W.}
}
@article {373,
	title = {Die kribobranchen Ascidien des westlichen Indischen Ozeans: Didemniden},
	journal = {Jahrbuch der Hamburgischen Wissenchaftlichen Anstalten},
	volume = {37},
	year = {1920},
	pages = {1-74},
	author = {Michaelsen, W.}
}
@article {237,
	title = {Ascidie Ptychobranchiae un Diktyobranchiae des Roten Meeres},
	journal = {Denkschriften der Akademie der Wissenchaften, Wien},
	volume = {95},
	number = {10},
	year = {1919},
	pages = {1-120},
	author = {Michaelsen, W.}
}
@article {326,
	title = {Die ptychobranchen und diktyobranchen Ascidien des Westlichen Indischen Ozeans},
	journal = {Jahrbuch der Hamburgischen Wissenchaftlichen Anstalten},
	volume = {35},
	number = {Supplement 2},
	year = {1918},
	pages = {1-73},
	author = {Michaelsen, W.}
}
