Emanuel A. Schegloff. "On 'Opening 
Seqencing': A framing statement." In J.E.
Katz and M. Aakhus (eds.), Perpetual Contact: 
Mobile communication, private
talk, public performance. (Cambridge: 
Cambridge  University Press, 2002),
321-25.

and

Emanuel A. Schegloff. "Opening Seqencing." 
In J.E. Katz and M. Aakhus (eds.), Perpetual 
Contact: Mobile communication, private
talk, public performance. (Cambridge: 
Cambridge  University Press, 2002),
326-85.