<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>48898</termId><termName>ATRACTORES (MATEMATICAS)</termName><termType>PT</termType><termLanguage>es-ES</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>ATRACTORES (MATEMATICAS)</termSortkey><termCreatedDate>ATRACTORES (MATEMATICAS)</termCreatedDate><termModifiedDate>2015-02-20 11:32:11</termModifiedDate><relation><relationType>BT</relationType><termId>6558</termId><termName>SISTEMAS DINAMICOS DIFERENCIALES</termName><termType>PT</termType></relation></term>  </Zthes>