*Reference works, forthcoming titles and titles affected by fixed book price laws are excluded from the promotion. This offer is valid only for individual customers and redeemable only in the Springer Shop for available titles. Bulk or eBulk orders are excluded from this promotion. The currency in which your order will be invoiced depends on the billing address, not necessarily your home currency; promotional prices may change due to exchange rates. Institutions such as libraries and corporations are excluded. For institutional sales please visit springernature.com/contact-us. This promotion does not work in combination with other discounts or gift cards.