Christina Herrero has discussed the maturity of AIReF (Independent Authority for Fiscal Responsibility) in Spain, describing it as a "more mature institution, technically more robust and more conscious of its public responsibility".
Researched the maturity of Sturgeon for sexual identification. christina mature
A 2019 "FIN summary" report on Christina Lake in Alberta provides data on the density, size, and health of mature Northern Pike and Walleye populations, indicating a need for continued conservation. Christina Herrero has discussed the maturity of AIReF