Updates are available Correction dated 2014-11-25

Click to view Correction: https://doi.org/10.1007/s40590-014-0049-z

Pairs of boundary slopes with small differences

Crossref DOI link: https://doi.org/10.1007/s40590-014-0021-y

Published Online: 2014-06-12

Published Print: 2014-10

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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