Generalized concavity of a function in portfolio theory

1985 ◽  
Vol 29 (5) ◽  
pp. 161-186 ◽  
Author(s):  
S. Schaible ◽  
W. T. Ziemba
2014 ◽  
Vol 1 ◽  
pp. 527-530 ◽  
Author(s):  
Kiyoharu Tanaka ◽  
Tomoya Suzuki
Keyword(s):  

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