For the dohā, see M. Shahidullah, Les chants mystiques de Kāṇha et de Saraha, pp. 60-66.
Though occasionally rhyme may be found in other, earlier, texts (I remember having read something somewhere about these "predecessors, written by D. Goodall) it has become a systematic feature of Apabhraṃśa texts (folk songs).
L. Alsdorf, Apabhraṃśa-Studien. AKM XXII 2, pp. 39-56.

Herman

Herman Tieken
Stationsweg 58
2515 BP Den Haag
The Netherlands
00 31 (0)70 2208127

Van: INDOLOGY [indology-bounces@list.indology.info] namens Matthew Kapstein via INDOLOGY [indology@list.indology.info]
Verzonden: donderdag 19 september 2019 0:41
Aan: indology@list.indology.info
Onderwerp: [INDOLOGY] Query on verse forms

Dear friends,

I would be grateful for recommendations of works addressing the manner in which the term gāthā is understood in connection with MIA verse, and analogously on dohā in connection with apabhraMza  and NIA verse. I am particularly looking for works dealing with formal features including meter, rhyme etc. 

with thanks in advance,
Matthew