Similar title to Parvinen, K. ORCID: https://orcid.org/0000-0001-9125-6041, Dieckmann, U. ORCID: https://orcid.org/0000-0001-7089-0393, & Heino, M. ORCID: https://orcid.org/0000-0003-2928-3940 (2006). Function-valued adaptive dynamics and the calculus of variations. Journal of Mathematical Biology 52 (1) 1-26. 10.1007/s00285-005-0329-3.