Original ResearchPublished 12 October 2026Does ESG protect profitability in a crisis? Evidence from US industrial firms during COVID-19Zhongbin Tong · Norkhairul Hafiz BajuriFrontiers in Environmental Sciencedoi 10.3389/fenvs.2026.1909351
Brief Research ReportPublished 14 September 2026Appell expansions and general-to-confluent Heun degeneration in a bounded recovery diffusionArtur Ishkhanyan · Clemente Cesarano · Khachatur BaboyanFrontiers in Applied Mathematics and Statisticsdoi 10.3389/fams.2026.1956515
