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            <front>

                <journal-meta>
                                    <journal-id></journal-id>
            <journal-title-group>
                                                                                    <journal-title>Hacettepe Journal of Mathematics and Statistics</journal-title>
            </journal-title-group>
                            <issn pub-type="ppub">2651-477X</issn>
                                        <issn pub-type="epub">2651-477X</issn>
                                                                                            <publisher>
                    <publisher-name>Hacettepe University</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id/>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Statistics</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>İstatistik</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <article-title>ON THE CONSTRUCTION OF 2-SYMBOL ORTHOGONAL ARRAYS</article-title>
                                                                                                                                        </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                <name>
                                    <surname>Bayrak</surname>
                                    <given-names>Hülya</given-names>
                                </name>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Alhan</surname>
                                    <given-names>Aslıhan</given-names>
                                </name>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20011201">
                    <day>12</day>
                    <month>01</month>
                    <year>2001</year>
                </pub-date>
                                        <volume>31</volume>
                                                    <fpage>57</fpage>
                                        <lpage>62</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20020122">
                        <day>01</day>
                        <month>22</month>
                        <year>2002</year>
                    </date>
                                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2002, Hacettepe Journal of Mathematics and Statistics</copyright-statement>
                    <copyright-year>2002</copyright-year>
                    <copyright-holder>Hacettepe Journal of Mathematics and Statistics</copyright-holder>
                </permissions>
            
                                                                                                <abstract><p>The application of Hadamard matrices to the theory and constructionof experimental designs is of considerable importance. The purpose of thisstudy is to point out some connections between Hadamard matrices, bal-anced incomplete block designs(BIB designs) and orthogonal arrays.</p></abstract>
                                                                                    
            
                                                            <kwd-group>
                                                    <kwd>Orthogonal array</kwd>
                                                    <kwd>  Hadamard matrix</kwd>
                                                    <kwd>  balanced incomplete block design</kwd>
                                                    <kwd>  projective geometry.</kwd>
                                            </kwd-group>
                                                        
                                                                                                                                                    </article-meta>
    </front>
    <back>
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                                    <ref id="ref1">
                        <label>1</label>
                        <mixed-citation publication-type="journal">.
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                    </ref>
                            </ref-list>
                    </back>
    </article>
