TY - JOUR TI - Examining the effects of music on cognitive skills of children in early childhood with the Pythagorean fuzzy set approach AU - KIRIŞCI, M. AU - TOPAÇ, N. AU - BARDAK, M. JO - Sigma Journal of Engineering and Natural Sciences PY - 2023 VL - 41 SP - 742 EP - 749 DO - 10.14744/sigma.2023.00084 ER -