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To do this, we compare the tunneling frequencies and energy levels obtained through the WKB method for symmetric and asymmetric cases with exact results obtained by a basis set procedure. Our results show that the semiclassical WKB approximation has to be used with caution for asymmetric double wells. \u00a9 1994 by John Wiley &amp; Sons, Inc.<\/jats:p>","DOI":"10.1002\/jcc.540150202","type":"journal-article","created":{"date-parts":[[2005,1,2]],"date-time":"2005-01-02T01:04:18Z","timestamp":1104627858000},"page":"125-131","source":"Crossref","is-referenced-by-count":6,"title":["Applicability of the WKB method in asymmetric double wells with degenerate and nondegenerate minima"],"prefix":"10.1002","volume":"15","author":[{"given":"Ricard","family":"Gelabert","sequence":"first","affiliation":[]},{"given":"Miquel","family":"Moreno","sequence":"additional","affiliation":[]},{"given":"Jos\u00e9 M.","family":"Lluch","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2004,9,7]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.441713"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/j100255a059"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.452234"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.455395"},{"key":"e_1_2_1_6_2","doi-asserted-by":"crossref","first-page":"3498","DOI":"10.1063\/1.455860","volume":"90","author":"Hancock G. 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