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Continue to ChatRecursion Operators and Tri-Hamiltonian Structure of the First Heavenly Equation of Plebanski - https://avesis.yildiz.edu.tr/yayin/bfe7ca35-f744-4ee4-b510-4a759bfda5f1/recursion-operators-and-tri-hamiltonian-structure-of-the-first-heavenly-equation-of-plebanski