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m →Further reading: typo; also this is not an article in a book but a (sub)section |
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* {{cite journal|ref=harv|journal=Decisions in Economics and Finance|volume=22|issue=1–2|pages=31–39|doi=10.1007/BF02912349|title=η-Pseudolinearity|first1=Qamrul Hasan|last1=Ansari|first2=Siegfried|last2=Schaible|first3=Jen-Chih|last3=Yao|month=March|year=1999}}
* {{cite journal|ref=harv|first1=Giorgio|last1=Giorgi|first2=Norma G.|last2=Rueda|title=η-Pseudolinearity and Efficiency|journal=International Journal of Optimization: Theory, Methods and Applications|issn=2070-5565|year=2009|volume=1|issue=2|pages=155–159|format=[[Portable Document Format|PDF]]|url=http://www.gip.hk/ijotma/Internet%20IJOTMA%20V1N2/IJOTMAV1N2%20PA/IJOTMAv1n2%20pa3.pdf}}
* {{cite book|ref=harv|
{{math-stub}}{{econ-stub}}
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