@incollection{haspelmath_biverbal_2027,
  author = {Haspelmath, Martin},
  title  = {Biverbal predicate constructions and related concepts: Serial verbs, converbs, auxiliaries, and grammaticalization (to appear)},
  url    = {https://ling.auf.net/lingbuzz/008802},
  year   = {2027}
}