<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Yongping Zhang</style></author><author><style face="normal" font="default" size="100%">Zhaoxin Liang</style></author><author><style face="normal" font="default" size="100%">Biao Wu</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Gap solitons and Bloch waves in nonlinear periodic systems</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A - Atomic, Molecular, and Optical Physics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">6</style></issue><custom7><style face="normal" font="default" size="100%">000273233800166</style></custom7></record></records></xml>