Some books:
Christo M. Danov, "Die Thraker auf dem Ostbalkan von der hellenistischen Zeit bis zur Gründung Konstantinopels" in ANRW vol. II.7.1, p. 22-185
Richard D. Sullivan, "Thrace in the Eastern Dynastic Network" in the same volume, p. 186-211
G. Mihailov, "Thrace before the Persian entry into Europe" in Cambridge Ancient History, vol. III.2, p. 591-618
Zofia H. Archibald, "Thracians and Scythians" in CAH VI, p. 444-475
Mirriam Griffin, "Nerva to Hadrian" in CAH XI, p. 84-131 (p. 109-113 hold a brief description of the Dacian Wars)
András Mócsy, Pannonia and Upper Moesia (see the first four chapters - p. 1-111 - about Thracians, Illyrians and Celts in these region and their contact with Rome)
Christopher L. Webber, The Thracians, 700 BC - AD 46
Helen Lund, Lysimachus (see chapter 2 "Thrace and Pontus", p. 19-50)
Ioana A. Oltean, Dacia - landscape, colonization and romanization (chapters 2-4 - p. 26-118 - deal with pre-Roman Dacia)
Some articles:
Edward T. Salmon, "Trajan's conquest of Dacia" in TAPA, 67/1936, p. 83-105
S. Casson, "Thracian Tribes in Scythia Minor" in Journal of Roman Studies, 17/1927, p. 97-101
A. Alföldi, "Dacians on the Southern Bank of the Danube" in JRS, 29.1/1939, p. 28-31
Peter Delev, "Lysimachus, Getae and Archaeology" in The Classical Quarterly, new series, 50.2/2000, p. 384-401
All these are on my HDD, the articles via JStor, the books via Google Books or perhaps other channels I don't remember right now. The bibliography is, of course, larger than that, but this should be enough for a summary on Dacians and Getae.
Edited by Chilbudios - 21-Oct-2008 at 13:23