Sometimes a frog in your throat is just a frog in your throat: Gutturals as (sometimes) laughter-implicative
by Gail Jefferson
Reference:
Gail Jefferson, (2010), "Sometimes a frog in your throat is just a frog in your throat: Gutturals as (sometimes) laughter-implicative", Journal of Pragmatics, vol. 42, no. 6, pp. 1476–1484.
Bibtex Entry:
@ARTICLE{Jefferson2010,
  author = "Gail Jefferson", 
  doi = "10.1016/j.pragma.2010.01.012", 
  keywords = "EMCA, Laughter", 
  journal = "Journal of Pragmatics", 
  number = "6", 
  pages = "1476–1484", 
  title = "Sometimes a frog in your throat is just a frog in your throat: Gutturals as (sometimes) laughter-implicative", 
  url = "http://www.sciencedirect.com/science/article/pii/S0378216610000251", 
  volume = "42", 
  year = "2010", 
}