?url_ver=Z39.88-2004&rft_id=10.4108%2Ficst.Valuetools.2014.258170&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Tschaikowski%2C+Max&rft.aufirst=Max&rft.aulast=Tschaikowski&rft.isbn=978-1-63190-057-0&rft.btitle=Proceedings+of+the+8th+International+Conference+on+Performance+Evaluation+Methodologies+and+Tools+(VALUETOOLS%2C+2014)+&rft.title=A+partial-differential+approximation+for+spatial+stochastic+process+algebra&rft.date=2014&rft.genre=proceeding