Sandeep Tata Papers on DiSC'04 PiQA: An Algebra for Querying Protein Data Sets Publications Note: Links lead to the DBLP on the Web. Sandeep Tata Sandeep Tata, Jignesh M. Patel : PiQA: An Algebra for Querying Protein Data Sets. SSDBM 2003 : 141-150 1 [ 1 ] ©2004 Association for Computing Machinery