?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.jtbi.2016.12.019&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Parvinen%2C+K.&rft.aulast=Parvinen&rft.aufirst=K.&rft.volume=416&rft.date=7+March+2017&rft.issn=1095-8541&rft.atitle=The+effect+of+fecundity+derivatives+on+the+condition+of+evolutionary+branching+in+spatial+models&rft.title=Journal+of+Theoretical+Biology&rft.pages=129-143&rft.genre=article