Moeschler, J. (1989), (<Pragmatic connectives, argumentative coherence, and
relevance>>, Argumentation 3/3, 321-339.
Moeschler, J. (1992), (<Foundations of dialogue analysis>>, in Stati, S. &
Weigand, E. (eds.), Methodologie der Dialoganalyse, Tuebingen, Niemeyer,
66-74.
Moeschler, J. (1993), (<Relevance and conversation>>, Lingua 90, 149-171.
Moeschler, J. (1994), (<How do we know that what we mean is understood ?
Hypothesis and warranty of uptake in conversation>>, in  Parret, H. (ed.),
Pretending to communicate, Berlin, de Gruyter, 33-47.

In French:
)Moeschler, J. (1990), (<Conversation, coherence et pertinence>>, dans B.
Conein, M. de Fornel et L. Quere (eds.), Les formes de la conversation,
vol. 1, Paris, CNET (Reseaux), 79-104..
Moeschler, J. (1991), (<Conversation et inference pragmatique>>, in Stati
S., Weigand, E. & Hundsnurscher F. (eds.), Dialoganalyse III. Referate der
3. Arbeitstagung, Bologna 1990, Tuebingen, Niemeyer, 185-196.
See also lots of workin papers in the Cahiers de Lingusitique francaise,
University of geneva, Department of Linguistics:

For a general view on pragmatics and relevance:

Moeschler, J. & Reboul, A. (1994), Dictionnaire encyclopedique de
pragmatique, Paris, Seuil, avril 1994.
Moeschler J., Reboul A., Luscher J.M., Jayez J. (1994), Langage et
pertinence. Reference temporelle, anaphore, connecteurs et metaphore,
Nancy, PUN, 1994.
 
Diane Blakemore's "Semantic Constraints on Relevance"?
 
Sperber, D. and D. Wilson. 1986. Relevance: Communication and
Cognition. Oxford: Blackwell.
It includes also a long list of references to other important works in
relevance theory, eg Blass, Blakemore, Carston, S&W (and other references,
of course).