Pradhan, K. 2023. Magnetically recoverable nano-crystalline NiFe2O4 catalyzed green and sustainable synthesis of functionalized pyrano-pyrazol, pyrano-coumarin, and 4H-chromene derivatives. Iranian Journal of Catalysis. 13, 4 (Dec. 2023). DOI:https://doi.org/10.30495/ijc.2023.1993771.2041.