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 <volume>20</volume>
 <number>1</number>
 <month>March</month>
 <year>1991</year>
 <sectionList>
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    <articles>
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          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/RafanelliR91.html">
          	<title articleCode="22000">A Functional Model for Macro-Databases.</title>
          </toArticle>
 <initPage>3</initPage>
 <endPage>8</endPage>
          <authors>
 <author AuthorPosition="00">Maurizio Rafanelli</author>
 <author AuthorPosition="01">Fabrizio L. Ricci</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Robinson91.html">
          	<title articleCode="786001">Some Further Analysis of the Essential Blocking Recurrence.</title>
          </toArticle>
 <initPage>9</initPage>
 <endPage>11</endPage>
          <authors>
 <author AuthorPosition="00">John T. Robinson</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Diederich91.html">
          	<title articleCode="565002">Minimal Covers Revisited: Correct and Efficient Algorithms.</title>
          </toArticle>
 <initPage>12</initPage>
 <endPage>13</endPage>
          <authors>
 <author AuthorPosition="00">Jim Diederich</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Soo91.html">
          	<title articleCode="146003">Bibliography on Temporal Databases.</title>
          </toArticle>
 <initPage>14</initPage>
 <endPage>23</endPage>
          <authors>
 <author AuthorPosition="00">Michael D. Soo</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Vossen91.html">
          	<title articleCode="144004">Bibliography on Object-Oriented Database Management.</title>
          </toArticle>
 <initPage>24</initPage>
 <endPage>46</endPage>
          <authors>
 <author AuthorPosition="00">Gottfried Vossen</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Thatte91.html">
          	<title articleCode="29005">A Modular and Open Object-Oriented Database System.</title>
          </toArticle>
 <initPage>47</initPage>
 <endPage>52</endPage>
          <authors>
 <author AuthorPosition="00">Satish M. Thatte</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Richard91.html">
          	<title articleCode="712006">research at Alta&iuml;r.</title>
          </toArticle>
 <initPage>53</initPage>
 <endPage>59</endPage>
          <authors>
 <author AuthorPosition="00">Philippe Richard</author>
          </authors>
     </articlesTuple>

    </articles>
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 </sectionList>
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