Shipments to the United States
Due to changes in U.S. customs regulations, all shipments to the United States are now subject to customs clearance.
This means that the recipient will be required to pay customs duties, as well as any applicable taxes and fees upon import.
Please also note that delivery may be delayed while the shipment is being processed by U.S. customs.
![Cover for Guang-Ren Duan · Generalized Sylvester Equations: Unified Parametric Solutions (Paperback Book) [size S] (2020)](https://imusic.b-cdn.net/images/item/original/700/9780367575700.jpg?guang-ren-duan-2020-generalized-sylvester-equations-unified-parametric-solutions-paperback-book&class=scaled&v=1691022071)
![Cover for Guang-Ren Duan · Analysis and Design of Descriptor Linear Systems - Advances in Mechanics and Mathematics (Paperback Book) [2010 edition] (2012)](https://imusic.b-cdn.net/images/item/original/844/9781461426844.jpg?guang-ren-duan-2012-analysis-and-design-of-descriptor-linear-systems-advances-in-mechanics-and-mathematics-paperback-book&class=scaled&v=1429988979)
![Cover for Guang-Ren Duan · Analysis and Design of Descriptor Linear Systems - Advances in Mechanics and Mathematics (Hardcover Book) [2010 edition] (2010)](https://imusic.b-cdn.net/images/item/original/963/9781441963963.jpg?guang-ren-duan-2010-analysis-and-design-of-descriptor-linear-systems-advances-in-mechanics-and-mathematics-hardcover-book&class=scaled&v=1429988979)