An Involutive Picture Fuzzy Negator on Picture Fuzzy Sets and Some De Morgan Triples. - Bui Cong Cuong; Roan Thi Ngan; Bui Duong Hai (KSE, 2015)

A classification of representable t-norm operators for picture fuzzy sets. - Bui Cong Cuong; Vladik Kreinovich; Roan Thi Ngan (KSE, 2016)

Linguistic approach in medical diagnosis. - Do Trung Tuan; Pham Hong Phong; Roan Thi Ngan (KSE, 2016)

Medical Diagnosis from Images with Intuitionistic Fuzzy Distance Measures. - Roan Thi Ngan; Bui Cong Cuong; Tran Manh Tuan; Le Hoang Son (IJCSR, 2018)

δ-equality of intuitionistic fuzzy sets: a new proximity measure and applications in medical diagnosis. - Roan Thi Ngan; Mumtaz Ali; Le Hoang Son (Appl. Intell., 2018)

H-max distance measure of intuitionistic fuzzy sets in decision making. - Roan Thi Ngan; Le Hoang Son; Bui Cong Cuong; Mumtaz Ali (Appl. Soft Comput., 2018)

Representing complex intuitionistic fuzzy set by quaternion numbers and applications to decision making. - Roan Thi Ngan; Le Hoang Son; Mumtaz Ali; Dan E. Tamir; Naphtali David Rishe; Abraham Kandel (Appl. Soft Comput., 2020)

A New Representation of Intuitionistic Fuzzy Systems and Their Applications in Critical Decision Making. - Le Hoang Son; Roan Thi Ngan; Mumtaz Ali; Hamido Fujita; Mohamed Abdel-Basset; Long Giang Nguyen; Gunasekaran Manogaran; Priyan Malarvizhi Kumar (IEEE Intell. Syst., 2020)