Geodesic
On comparison between Apostolatos--Kulisch and Mayer--Warnke theorems in interval analysis
Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 12 (2009) no. 3, pp. 351-359

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This paper deals with comparing Apostolatos–Kulisch theorem and Mayer–Warnke theorem that form a basis of the so-called formal (aka algebraic) approach to the outer interval estimation of the solution sets for interval linear systems of equations. We show that despite a greater generality of Mayer–Warnke theorem, it extends the applicability scope of the formal approach to a very small extent, and a practical significance of such an extension is inessential. 
@article{SJVM_2009_12_3_a9,
     author = {S. P. Shary},
     title = {On comparison between {Apostolatos--Kulisch} and {Mayer--Warnke} theorems in interval analysis},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {351--359},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2009_12_3_a9/}
}
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S. P. Shary. On comparison between Apostolatos--Kulisch and Mayer--Warnke theorems in interval analysis. Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 12 (2009) no. 3, pp. 351-359. http://geodesic.mathdoc.fr/item/SJVM_2009_12_3_a9/