Geodesic
An estimate for the relative linear width of the unit ball for a class of positive operators
Sibirskij žurnal industrialʹnoj matematiki, Tome 10 (2007) no. 4, pp. 122-128 
S. P. Sidorov. An estimate for the relative linear width of the unit ball for a class of positive operators. Sibirskij žurnal industrialʹnoj matematiki, Tome 10 (2007) no. 4, pp. 122-128. http://geodesic.mathdoc.fr/item/SJIM_2007_10_4_a12/
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