{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T11:31:27Z","timestamp":1777548687489,"version":"3.51.4"},"reference-count":13,"publisher":"Society for Industrial & Applied Mathematics (SIAM)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SIAM J. Comput."],"published-print":{"date-parts":[[1992,12]]},"DOI":"10.1137\/0221068","type":"journal-article","created":{"date-parts":[[2005,2,24]],"date-time":"2005-02-24T11:38:23Z","timestamp":1109245103000},"page":"1161-1179","source":"Crossref","is-referenced-by-count":31,"title":["Approximation and Small-Depth Frege Proofs"],"prefix":"10.1137","volume":"21","author":[{"given":"Stephen","family":"Bellantoni","sequence":"first","affiliation":[]},{"given":"Toniann","family":"Pitassi","sequence":"additional","affiliation":[]},{"given":"Alasdair","family":"Urquhart","sequence":"additional","affiliation":[]}],"member":"351","reference":[{"key":"RAJT2","doi-asserted-by":"publisher","DOI":"10.1016\/0168-0072(83)90038-6"},{"key":"RAJT3","doi-asserted-by":"publisher","DOI":"10.1016\/0168-0072(89)90036-5"},{"key":"RBU","doi-asserted-by":"publisher","DOI":"10.2307\/2273826"},{"key":"RCR","doi-asserted-by":"publisher","DOI":"10.2307\/2273702"},{"key":"RFSS","doi-asserted-by":"publisher","DOI":"10.1007\/BF01744431"},{"key":"RHA","doi-asserted-by":"publisher","DOI":"10.1016\/0304-3975(85)90144-6"},{"key":"RH","volume-title":"Computational Limitations of Small-Depth Circuits","author":"H\u00e5stad J.","year":"1987"},{"key":"RPW","doi-asserted-by":"publisher","DOI":"10.1007\/BFb0075316"},{"key":"RPWW","doi-asserted-by":"publisher","DOI":"10.2307\/2274618"},{"key":"RRAZ","first-page":"354","volume":"31","author":"Razsorov A. A.","year":"1985","journal-title":"Soviet Math. Dokl."},{"key":"RSH","volume-title":"Mathematical logic","author":"Shoenfield J.","year":"1967"},{"key":"RSP","volume-title":"Ten lectures on the probabilistic method","author":"Spencer Joel","year":"1987"},{"key":"RURQ","doi-asserted-by":"publisher","DOI":"10.1145\/7531.8928"}],"container-title":["SIAM Journal on Computing"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/epubs.siam.org\/doi\/pdf\/10.1137\/0221068","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,1,29]],"date-time":"2017-01-29T17:27:48Z","timestamp":1485710868000},"score":1,"resource":{"primary":{"URL":"http:\/\/epubs.siam.org\/doi\/10.1137\/0221068"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1992,12]]},"references-count":13,"journal-issue":{"issue":"6","published-print":{"date-parts":[[1992,12]]}},"alternative-id":["10.1137\/0221068"],"URL":"https:\/\/doi.org\/10.1137\/0221068","relation":{},"ISSN":["0097-5397","1095-7111"],"issn-type":[{"value":"0097-5397","type":"print"},{"value":"1095-7111","type":"electronic"}],"subject":[],"published":{"date-parts":[[1992,12]]}}}