<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSpy v2006 sp1 U (http://www.altova.com) by Shonin (Kiev Polytechnic Insitute) -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
<!--Глобальные элементы-->
<xs:element name="author1" type="xs:string" fixed="Иванов И. И.">
<xs:annotation>
<xs:documentation>Иванов И. И.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="author2" type="xs:string" fixed="Петров П. П.">
<xs:annotation>
<xs:documentation>Петров П. П.</xs:documentation>
</xs:annotation>
</xs:element>
<!--Простые типы-->
<xs:simpleType name="text">
<xs:annotation>
<xs:documentation>простой тип, для наложения ограничений на article, content, section, subsection и paragraph</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:pattern value="[A-Z](\p{Ll}\p{P}\p{Z})+"/>
</xs:restriction>
</xs:simpleType>
<!--Глобальные элементы-->
<xs:element name="article-list">
<xs:annotation>
<xs:documentation>Корневой тип</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element ref="article" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="article">
<xs:complexType mixed="true">
<xs:sequence>
<xs:element ref="author" maxOccurs="unbounded"/>
<xs:element ref="annotation"/>
<xs:element ref="content"/>
<xs:element ref="recieving-date"/>
</xs:sequence>
<xs:attribute name="section" use="optional" default="computers">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="computers"/>
<xs:enumeration value="mathematics"/>
<xs:enumeration value="physics"/>
<xs:enumeration value="chemistry"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:complexType>
</xs:element>
<xs:element name="recieving-date" type="xs:date"/>
<xs:element name="author">
<xs:complexType mixed="true">
<xs:choice minOccurs="0">
<xs:element ref="author1"/>
<xs:element ref="author2"/>
</xs:choice>
</xs:complexType>
</xs:element>
<xs:element name="content">
<xs:complexType mixed="false">
<xs:sequence>
<xs:element ref="section" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="section">
<xs:complexType mixed="true">
<xs:sequence>
<xs:element ref="subsection" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="style" use="optional" default="ordinary">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="ordinary"/>
<xs:enumeration value="strong"/>
<xs:enumeration value="selected"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:complexType>
</xs:element>
<xs:element name="subsection">
<xs:complexType mixed="true">
<xs:sequence>
<xs:element ref="paragraph" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="style" use="optional" default="ordinary">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="ordinary"/>
<xs:enumeration value="strong"/>
<xs:enumeration value="big"/>
<xs:enumeration value="small"/>
<xs:enumeration value="selected"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:complexType>
</xs:element>
<xs:element name="paragraph">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="xs:string">
<xs:attribute name="style" use="optional" default="ordinary">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="ordinary"/>
<xs:enumeration value="strong"/>
<xs:enumeration value="big"/>
<xs:enumeration value="small"/>
<xs:enumeration value="selected"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
<xs:element name="annotation" type="xs:string"/>
</xs:schema>