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<http://webisa.webdatacommons.org/381038776>	<http://www.w3.org/ns/prov#value>	"Patent US6031680 - Methods and systems for self-servowriting including maintaining a reference ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsMethods and systems for self-servowriting a data storage medium are disclosed, including servoing to propagation bursts of a propagation pattern located in tracks other than an immediately prec" .
<http://webisa.webdatacommons.org/prov/131967994>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/381038776> .