Evaluating efficiency and ranking of suppliers using non-radial super-efficiency data envelopment analysis with uncontrollable factors. - Mushtaq Taleb; Ruzelan Khalid; Mamdooh Attallah; Razamin Ramli; Mohd Kamal Mohd Nawawi (Int. J. Comput. Math. Comput. Syst. Theory, 2023)