Massaux, Éduard. "Conclusion." The Influence of the Gospel of Saint Matthew on Christian Literature before Saint Irenaeus: Book 3: The Apologists and the Didache. (Translated by Norman J. Belval and Suzanne Hecht. Macon, Georgia: Mercer University Press, 1993, 144-182.
Massaux sums up his survey of early Christian authors and their use, particularly, of Matthew's Gospel. He has observed that the authors tend to prefer Matthew over the other Gospels, and that they particularly tend to refer to the Sermon on the Mount (Massaux 1993, 183). He has even observed that Clement of Rome nad Polycarp had catechetical materials which seem to be based on the Sermon on the Mount.
Massaux provides a list of the particular references which he considers to bear a literal dependence on Matthew. This list consumes the second half of page 184 and all of page 185, and totals 16 entries, half of which are in Justin Martyr.
The intention of the authors is significant. The authors Massaux surveyed did not make an attempt at commentary on the text. Rather, they used the ideas, and sometimes the words, in their work of describing or prescribing a life based on the Gospel (Massaux 1993, 186). Massaux further notes that Matthew was the Gospel text of choice for these authors. They would even refer to "the" gospel, then quote Matthew, rather than any other evangelist (Massaux 1993, 187). Occasionally the early Christian authors would use Paul, especially for moral theology (Massaux 1993, 188). Mark, surprisingly enough, has virtually no influence on early Christian authors. Massaux comments on this, particularly in terms of the widespread scholarly opinion of Markan primacy (Massaux 1993, 188). He considers that Papias' comment of Mark not necessarily recording events in order was reflective of an attitude that Matthew was more accurate.