By Henríquez H.R.   Vásquez C.H.   in Acta Applicandae Mathematicae

ISSN:0167-8019|57|2|105-132

Springer Publishing Company ‎(1999)‎

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By Castillo G.   Henríquez H. R.   in Acta Mathematica Hungarica

ISSN:0236-5294|106|1-2|27-39

Springer Publishing Company ‎(2005)‎

Access to resources Favorite 4.8310723