CHAVAN, L. D.; NAGOLKAR, B. B.; CHONDHEKAR, T. K.; SHANKARWAR, S. G. Montmorillonite K-10 Supported 11-molybdo-1-vanadophosphoric Acid (H4PMo11V1O40/K-10) Catalysts for Environmentally Benign Synthesis of 2H-indazolo[2,1-b]phthalazine-triones Under Solvent-free Condition. Orbital: The Electronic Journal of Chemistry, v. 9, n. 4, p. 210-218, 2 Oct. 2017.