|
Korukoğlu and Ballı [65]
|
2011
|
Crisp environment
|
|
Kumar [66]
|
2018
|
Fuzzy environment PSK method
|
|
Chhibber et al. [67]
|
2019
|
Type 1 and type 2 fuzzy environment
|
|
Celik and Akyuz [68]
|
2018
|
Interval type 2 fuzzy environment
|
|
Bharati [69]
|
2019
|
Trapezoidal intuitionistic fuzzy environment
|
|
Bharati and Singh [22]
|
2018
|
Interval-valued intuitionistic fuzzy environment
|
|
Ahmad and Adhami [70]
|
2018
|
Neutrosophic fuzzy environment
|