I am in the process of uploading articles that deal with mostly fourth century numismatics. If you have some pdf's of articles that might be appropriate please let me know.
http://www.constantinethegreatcoins.com/articles/I will try to update as I add articles. Here are the current ones uploaded-
Alfoldi, Andreas. Hasta-Summa Imperii: The Spear as Embodiment of Sovereignty in Rome. AJA 59 (1963) : 1-27.
________. The Helmet of Constantine with the Christian Monogram. JRS 22 (1932) : 9-23.
________. On the Foundation of Constantinople: A Few Notes. JRS 37 (1947) : 10-16.
Brown, Peter Lamont.The Later Roman Empire. The Economic History Review 20, no. 2 (August 1967) : 327-343.
Bruun, Patrick. Some Dynastic Bronze Coins of Constantine the Great. Eranos 53 (1955) : 193- 198.
________. The Christian Signs on the Coins of Constantine. Arctos 3 (1962) : 5- 35.
________. The Heraclean Coinage of Maximinus Daza: A Drastic Proposal. Studies in Ancient History and Numismatics Presented to Rudi Thomsen.
Aarhus,Denmark: Aarhus University Press (1988) : 179-194.
________. Gloria Romanorum. Studia in honorem Iiro Kajanto. Helsinki: Classical Association of Finland (1985) : 22-31.
Burgess, R.W. THE SUMMER OF BLOOD. The "Great Massacre" of 337 and the Promotion of the Sons of Constantine. Dumbarton Oaks Papers 62, 2008.
Cope, L. H. The Composition of 35 Roman Bronze Coins of the Period A.D. 284- 363. Historical Metallurgy1 (1967) : 1- 6.
________. The Metallurgical Examination of a Debased Silver Coin of Maximinus Daza Issued by Constantine I. Archaeometry 15 (1973) : 221-228.
________. Diocletian's Price Edict and Second Coinage Reform in the Light of Recent Discoveries. NC 17 (1977) : 220-226.
Howgego, Christopher. "The Supply and Use of Money in the Roman 200 B.C. to A.D. 300." JRS 82 (1992): 1- 31.
Huvelin, Helene. Les Deux Emissions Londoniennes. NZ 101 (1990) 29-50.
Jones, A. H. M. The Origin and Early History of the Follis. JRS 49 (1959) : 34-38.
King, C. E. The Alloy Content of Folles and Imitations from the Woodeaton Hoard. PACT 1 (1977) : 86-100.
Mattingly, Harold. Hoards of Roman Coins Found in Britain: And a Coin Survey of the Roman Province. JRS 22 part 1 (1932) : 88-95.
Milne, J. G. The Shops of the Roman Mint of Alexandria. JRS 8 (1918) : 154-178.
Odahl, Charles. Constantinian Coin Motifs in Ancient Literary Sources. JRMMRA 7 (1986) : 1-15.
________. Christian Symbols on Constantine's Siscia Helmet Coins. SAN 7, no. 4 (Fall 1977) : 56-58.
Reece, Richard. Roman Coinage in the Western Empire. Britannia 4 (1973) : 227-251.
Thompson, E. A. Constantine, Constantius II and the Lower Danube Frontier. Hermes 84 (1956) : 372-381.