Some properties of upper triangular $$3\times 3$$ 3 × 3 -block matrices of linear relations
Crossref DOI link: https://doi.org/10.1007/s40574-015-0036-y
Published Online: 2015-11-13
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Ammar, Aymen
Dhahri, Mohammed Zerai
Jeribi, Aref
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