Johannes Vahlen
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- Quaestiones Ennianae criticae, Dissertation Bonn 1852 (Internet Archive)
- Ennicanae poesis reliquiae, recens. J. Vahlen, Leipzig 1854 (Google)
- Ioannis Vahleni in M. Terentii Varronis saturarum Menippearum reliquias coniectanea, Leipzig 1858 (Google)
- Q. Ennius poeta versu hexametro in litteras Latinas inducto quatenus meritus sit, Koblenz 1866 (Internet Archive)
- Emendationes Livianae, Berlin 1877 (Internet Archive)
- Observationes criticae ad nonnullos Ennii versus, Berlin 1878 (Internet Archive)
- De Platonis Philebo, Berlin 1879 (Internet Archive)
- De Taciti De oratoribus libello, Berlin 1879 (Internet Archive)
- De versibus poetarum veterum a Cicerone citatis, Berlin 1880 (Internet Archive)
- Ad Taciti dialogum observationes, Berlin 1881 (Internet Archive)
- De versibus nonnullis Juvenalis, Berlin 1884 (Internet Archive)
- De tribus Theocriti Idylliis (XIV, XII, XVII), Berlin 1885 (Internet Archive)
- Disputatio Horatiana: De repetitus versibus, Berlin 1886 (Internet Archive)
- De Euripidis Electra, Berlin 1887 (Internet Archive)
- De sermone liviano observationes criticae, Berlin 1890 (Internet Archive)
- De Euripidis Hercule quem furentem dicere solebant disputatio, Berlin 1893 (Internet Archive)
- De M. Minucii Felicis Octavio, Berlin 1894 (Internet Archive)
- De Ovidii Fastis disputatio, Berlin 1894 (Internet Archive)
- De versibus nonnullis Sophocleis, Berlin 1895 (Internet Archive)
- De Phaedonis Platonici loco quodam disputatio, Berlin 1896 (Internet Archive)
- De Theocriti idyllio septimo, Berlin 1896 (Internet Archive)
- De Valerii Catulli carminibus, Berlin 1897 (Internet Archive)
- Quaestiones quaedam Aristophaneae, Berlin 1898 (Internet Archive)
- De genere quodam emendationis Tullianae, Berlin 1899 (Internet Archive)
- Quaestiones Aristophaneae alterae, Berlin 1899 (Internet Archive)
- Genus quoddam emendationis Tullianae continuatur, Berlin 1900 (Internet Archive)
- De Accii poetae tragici de comoediis Plautinis loco a Gellio relato disputatio, Berlin 1901 (Internet Archive)
- Ennianae poesis reliquiae, Leipzig 1903 (Internet Archive)
- De deliciis orationis Catullianae, Berlin 1906 (Internet Archive)
- Miscellanea critica in locos quosdam scriptorum Graecorum, Berlin 1906 (Internet Archive)