Choix d'un vaccin au Burkina Faso contre le covid- 19 par une méthode d'Aide à la DecisionSougoursi Jean Yves ZARE , Z𝑜𝚤𝑛𝑎𝑏𝑜 SAVADOGOExtension of the TOPSIS method to group decision-makingSougoursi Jean Yves ZARE , Zo¨ınabo SAVADOGO , Wambie ZONGO , Somdouda SAWADOGO and Blaise SOMECOLLECTIVE AGGREGATION METHOD BASED ON THE ELECTRE I METHOD FOR SOLVING SELECTION PROBLEMSFrédéric Nikiema , Zoïnabo Savadogo , Somdouda Sawadogo and Blaise SomeMETHOD OF SOLVING GROUP DECISION PROBLEMS BY THE ARITHMETIC MEAN AND THE MEAN DEVIATIONWambié Zongo, Zoïnabo Savadogo, Sougoursi Jean Yves Zare, Somdouda Sawadogo and Blaise SomeNew Innovative Method in the Field of Social Choice TheoryZoïnabo Savadogo1 , Sougoursi Jean Yves Zaré1 , Wambie Zongo1 , Somdouda Sawadogo2 , Blaise Somé1 |