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This approach allows for improved and more flexible algorithms compared to those for the standard mortar condition where nodal values in the interior of a sub-domain, those closest to a mortar side of the subdomain, are also required in the calculation.<\/jats:p>","DOI":"10.1137\/060663593","type":"journal-article","created":{"date-parts":[[2008,1,30]],"date-time":"2008-01-30T18:05:46Z","timestamp":1201716346000},"page":"496-516","source":"Crossref","is-referenced-by-count":7,"title":["The Crouzeix\u2013Raviart FE on Nonmatching Grids with an Approximate Mortar Condition"],"prefix":"10.1137","volume":"46","author":[{"given":"Talal","family":"Rahman","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Petter","family":"Bj\u00d8rstad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuejun","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"351","published-online":{"date-parts":[[2008,1,30]]},"reference":[{"key":"R1","doi-asserted-by":"publisher","DOI":"10.1051\/m2an\/1997310202891"},{"key":"R2","unstructured":"F. 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Xu,\n                      A Multilevel Preconditioner for the Mortar Method for Nonconforming P1 Finite Element\n                      , BCCS technical report 16, Bergen Center for Computational Science, Bergen, Norway, 2006 (submitted)."},{"key":"R19","doi-asserted-by":"publisher","DOI":"10.1007\/s00211-005-0625-2"},{"key":"R20","doi-asserted-by":"publisher","DOI":"10.1007\/s002110050292"},{"key":"R21","doi-asserted-by":"publisher","DOI":"10.1090\/S0025-5718-99-01083-2"},{"key":"R22","unstructured":"B. Smith, P. E. Bj\u00f8rstad, and W. 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