“This is an excellent book devoted to the well-known turnpike phenomenon which holds for large classes of variational and optimal control problems. ... Examples and many exercises are included to illustrate the theoretical results. An adequate list of references and an index of notations are added. It is worth pointing out that the book is well organized, with clear proofs and explanations, easy to read. I strongly recommend it to graduate students and researchers interested in the field.” (Gheorghe Moroşanu, zbMATH 1462.49003, 2021)