1910-1919

Petersen E. 1910, "Septizonium", RM 25, 56-73.
Comment: Full text at: https://arachne.dainst.org/entity/3047061.
Hampe K. 1913, "Ein ungedruckter Bericht ueber das Konklave von 1241 im roemischen Septizonium", Sitzungsberichte der Heidelberger Akademie der Wissenschaften, Philosophisch-Historische Klasse 4,1, 3-34.
Comment: Full text at: https://digi.hadw-bw.de/view/sbhadwphkl_1913_1.
Cumont F. 1916, "Deux milliaires de Septime Severe", CRAI 60,5, 388-395.
Comment: Full text at: https://www.persee.fr/doc/crai_0065-0536_1916_num_60_5_73760.
Oman C. 1918, "On the coins of Severus and Gallienus commemorating the Roman legions", The Numismatic Chronicle and Journal of the Royal Numismatic Society 18, 80-96.
Comment: Full text at: https://www.jstor.org/stable/42678499.
Platnauer M. 1918, The Life and Reign of the Emperor Lucius Septimius Severus, Oxford.
Comment: Full text at: https://archive.org/details/lifereignofemper00platrich.
Roos A.G. 1919, "De rescripto Imp. Severi et Caracallae nuper reperto", Mnemosyne 47,4, 371-377.
Comment: Full text at: https://www.jstor.org/stable/4426049.