On the Nonnegativity of XX* and its Relevance in Econometrics.
Ronning, Gerd
Metrika, Tome 32 (1985), p. 35-47 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1985-01-01
EUDML-ID : urn:eudml:doc:175984 
@article{GDZPPN002459841,
     title = {On the Nonnegativity of XX* and its Relevance in Econometrics.},
     journal = {Metrika},
     volume = {32},
     year = {1985},
     pages = {35-47},
     zbl = {0558.62099},
     url = {http://dml.mathdoc.fr/item/GDZPPN002459841}
}

Ronning, Gerd. On the Nonnegativity of XX* and its Relevance in Econometrics.. Metrika, Tome 32 (1985) pp. 35-47. http://gdmltest.u-ga.fr/item/GDZPPN002459841/