Li, Chi-Kwong, Poon, Edward, Rastogi, Ashwin (2007)

ELA. The Electronic Journal of Linear Algebra [electronic only]

Andrew Du Plessis (1975)

Commentarii mathematici Helvetici

Palusinski, Olgierd A., Lee, Chang-Ku, Seol, Byong-Su, You, Younggap, Szidarovszky, Ferenc (1998)

Southwest Journal of Pure and Applied Mathematics [electronic only]

Ivo Marek (1966)

Pokroky matematiky, fyziky a astronomie

Marques de Sá, E., Vieira, J. David (1991)

Portugaliae mathematica

McKerihan, Mark D. (1995)

The Electronic Journal of Combinatorics [electronic only]

Eugène Malek (1963/1964)

Séminaire Delange-Pisot-Poitou. Théorie des nombres

Handelman, David (2009)

ELA. The Electronic Journal of Linear Algebra [electronic only]

M. Eytan (1975)

Mathématiques et Sciences Humaines

Sehgal, Sudarshan, Szigeti, Jenő (2002)

Beiträge zur Algebra und Geometrie

Johnson, Charles R., Costas-Santos, Roberto S., Tadchiev, Boris (2009)

ELA. The Electronic Journal of Linear Algebra [electronic only]

Beitia, Maria Asunción (1985/1986)

Portugaliae mathematica

Graciano de Neves de Oliveira (1971)

Monatshefte für Mathematik

Silva, Fernando C. (1987)

Portugaliae mathematica

Ion Zaballa (1986)

Extracta Mathematicae

Silva, Fernando C. (1990)

Portugaliae mathematica

Dannan, Fozi M. (2001)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]

Zhang, Juan, Liu, Jianzhou (2010)

Mathematical Problems in Engineering

Edward Spence (1972)

Acta Arithmetica

Zhour, Zeyad Al, Kilicman, Adem (2006)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]