Critically discuss the grounds for refusal of the enforcement of an arbitral awa

Critically discuss the grounds for refusal of the enforcement of an arbitral award under the Convention on the Recognition and Enforcement of Foreign Arbitral Awards, signed 10 June 1958 (the ‘New York Convention’). In your answer, reference both primary and secondary legal sources.
please use the Oscola format to reference.
please notice that the instruction says both primary and secondary legal sources is required, which means legal cases is required.
if you need any file or sources, just be free to contact me