Dialogues: Sebastian P. Brock, SELECTED DIALOGUE POEMS [SUGYOTHO MGABYOTHO], Bar Ebroyo Kloster Publications 1, Gorgias Press 2009 which is a republication, with additional vowels (and more than a few typing errors) of SUGYOTHO MGABYOTHO published by the MorEphrem monastery in Holland, 1982. For those of Ephrem the publications of E. Beck should be consulted for variants.
Joseph and Benjamin: Dialogue between Joseph and Benjamin, from Sebastian P. Brock, SELECTED DIALOGUE POEMS [SUGYOTHO MGABYOTHO], Bar Ebroyo Kloster Publications 1, Gorgias Press 2009.