Lots of scholars accept Q. Here's the bibliography
from the Anchor Bible Dictionary for starters.
Must say I'm not up on the work of Mr. Boring (infra).
Boring, M. E. 1982. Sayings of the Risen Jesus.
Cambridge.
Bussby, F. 1954. Is Q an Aramaic Document? ExpTim
65: 272–75.
Bussmann, W. 1929. Synoptische Studien. Vol. 2 of
Zur Redenquelle. Halle.
Carlston, C. E., and Norlin, D. 1971. Once
More—Statistics and Q. HTR 64: 59–78.
Downing, F. G. 1965. Towards the Rehabilitation of
Q. NTS 11: 169–81.
Dungan, D. L. 1970. Mark—The Abridgement of
Matthew and Luke. Vol. 1, Pp. 51–97 in Jesus and
Man’s Hope. 2 vols. Pittsburgh.
Edwards, R. A. 1971. The Sign of Jonah. London.
Farmer, W. R. 1964. The Synoptic Problem. New York.
Farrer, A. 1955. On Dispensing with Q. Pp. 55–88
in Studies in the Gospels: Essays in Memory of R.
H. Lightfoot, ed. D. E. Nineham. Oxford.
Goulder, M. D. 1978. On Putting Q to the Test. NTS
24: 218–34.
Hoffmann, P. 1972. Studien zur Theologie der
Logienquelle. NTA NF 8. Münster.
Jacobson, A. D. 1978. Wisdom Christology in Q.
Ph.D. diss., Claremont.
———. 1982. The Literary Unity of Q. JBL 101: 365–89.
Kloppenborg, J. S. 1984. Tradition and Redaction
in the Synoptic Sayings Source. CBQ 46: 34–62.
———. 1987. The Formation of Q. Philadelphia.
Lührmann, D. 1969. Die Redaktion der Logienquelle.
WMANT 33. Neukirchen-Vluyn.
Manson, T. W. 1949. The Sayings of Jesus. London.
Meyer, P. D. 1970. The Gentile Mission in Q. JBL
89: 405–17.
Nierynck, F. 1982. Recent Developments in the
Study of Q. Pp. 29–75 in LOGIA—The Sayings of
Jesus, ed. J. Delobel. Louvain.
Polag, A. 1977. Die Christologie der Logienquelle.
WMANT 45. Neukirchen-Vluyn.
Robinson, J. M. 1971. LOGOI SOPHON: On the Gattung
of Q. Pp. 84–130 in The Future of Our Religious
Past: Essays in Honour of Rudolf Bultmann. London.
———. 1986. On Bridging the Gulf from Q to the
Gospel of Thomas (or Vice Versa). Pp. 127–76 in
Nag Hammadi: Gnosticism and Early Christianity,
ed. C. W. Hedrick and R. Hodgson. Peabody.
Rosché, T. R. 1960. The Words of Jesus and the
Future of the “Q” Hypothesis. JBL 79: 210–20.
Sato, M. 1988. Q und Prophetie. WUNT 2/29. Tübingen.
Schenk, W. 1981. Synopse zur Redenquelle der
Evangelien. Düsseldorf.
Schottroff, L., and Stegemann, W. 1978. Jesus von
Nazareth—Hoffnung der Armen. Stuttgart.
Schulz, S. 1972. Q—Die Spruchquelle der
Evangelisten. Zurich.
Schürmann, H. 1968. Traditionsgeschichtliche
Untersuchungen zu den synoptischen Evangelien.
Düsseldorf.
———. 1975.Beobachtungen zum Menschensohn-Titel in
der Redequelle. Pp. 124–47 in Jesus und der
Menschensohn: Für Anton Vögtle. Freiburg.
———. 1982. Das Zeugnis der Redenquelle für die
Basileia-Verkündigung Jesu. Pp. 121–200 in
LOGIA—The Sayings of Jesus, ed. J. Delobel. Louvain.
———. 1986. Die Redekomposition wider “dieses
Geschlecht” und seine Führung in der Redequelle
(vgl. Mt 23:1-39, Mt 23:1-39 par Lk 11:1-54, Lk
11:37-54). Studien zum Neuen Testament und seiner
Umwelt A 11: 33–81.
Steck, O. H. 1967. Israel und das gewaltsame
Geschick der Propheten. WMANT 23. Neukirchen-Vluyn.
Taylor, V. 1953. The Order of Q. JTS 4: 27–31.
———. 1959. The Original Order of Q. Pp. 246–69 in
New Testament Essays: Studies in Memory of T. W.
Manson, Ed. A. J. B. Higgins. Manchester.
Theissen, G. 1979. Studien zur Soziologie des
Urchristentums. WUNT 19. Tübingen.
Tödt, H. E. 1965. The Son of Man in the Synoptic
Tradition. London.
Tuckett, C. M. 1982. The Present Son of Man. JSNT
14: 58–81.
———. 1984. On the Relationship between Matthew and
Luke. NTS 30: 130–42.
Turner, N. 1969. Q in Recent Thought. ExpTim 80:
324–28.
Uro, R. 1987. Sheep among the Wolves: A Study of
the Mission Instructions of Q. Helsinki.
Vassiliadis, P. 1978. The Nature and Extent of the
Q Document. NovT 20: 49–73.
Wegner, U. 1985. Der Hauptmann von Kafarnaum.
WUNT, n.s., 14. Tübingen.
Zeller, D. 1982.Redaktionsprozesse und wechselnder
“Sitz im Leben” beim Q-Material. Pp. 395–409 in
LOGIA—The Sayings of Jesus, ed. J. Delobel. Louvain.
———. 1984. Kommentar zur Logienquelle. Stuttgart.
from: Freedman, David Noel, ed., The Anchor Bible
Dictionary, (New York: Doubleday) 1997.
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