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 Ellina Grigorieva · Methods of Solving Number Theory Problems (Hardcover Book) [1st ed. 2018 edition] (2018)](https://imusic.b-cdn.net/images/item/original/141/9783319909141.jpg?ellina-grigorieva-2018-methods-of-solving-number-theory-problems-hardcover-book&class=scaled&v=1584199284)
![Cover for Ellina Grigorieva · Methods of Solving Sequence and Series Problems (Paperback Book) [Softcover reprint of the original 1st ed. 2016 edition] (2018)](https://imusic.b-cdn.net/images/item/original/484/9783319833484.jpg?ellina-grigorieva-2018-methods-of-solving-sequence-and-series-problems-paperback-book&class=scaled&v=1584199294)
![Cover for Ellina Grigorieva · Methods of Solving Sequence and Series Problems (Hardcover Book) [1st ed. 2016 edition] (2016)](https://imusic.b-cdn.net/images/item/original/850/9783319456850.jpg?ellina-grigorieva-2016-methods-of-solving-sequence-and-series-problems-hardcover-book&class=scaled&v=1483710495)
![Cover for Ellina Grigorieva · Methods of Solving Nonstandard Problems (Paperback Book) [Softcover reprint of the original 1st ed. 2015 edition] (2016)](https://imusic.b-cdn.net/images/item/original/013/9783319369013.jpg?ellina-grigorieva-2016-methods-of-solving-nonstandard-problems-paperback-book&class=scaled&v=1623286355)
![Cover for Ellina Grigorieva · Methods of Solving Complex Geometry Problems (Paperback Book) [Softcover reprint of the original 1st ed. 2013 edition] (2016)](https://imusic.b-cdn.net/images/item/original/625/9783319375625.jpg?ellina-grigorieva-2016-methods-of-solving-complex-geometry-problems-paperback-book&class=scaled&v=1584199284)
![Cover for Ellina Grigorieva · Methods of Solving Nonstandard Problems (Hardcover Book) [1st ed. 2015 edition] (2015)](https://imusic.b-cdn.net/images/item/original/866/9783319198866.jpg?ellina-grigorieva-2015-methods-of-solving-nonstandard-problems-hardcover-book&class=scaled&v=1563992853)