The object of research is distributed information systems to support science.
The aim of research is to development of queries using the Z39.50 protocol in distributed information systems to support science.
Main scientific results imply the following. Using the Z39.50 protocol, abstract queries are organized. Abstract requests are formed based on search attributes from zthes-1, bib-1, XD-1, and util.
The paper considers technological methods for constructing models of information systems designed to support scientific and educational activities.
Limitations for practical use: simple queries are constructed without using logical operators and perform a search by a single search parameter.