The book "Phase equilibria and structural formation" by the authors of A. C. Lileyev and E. C. Malyutina is a real treasure for those who seek to understand the deep mechanisms of transformations in complex systems of matter. This scientific work reveals to the reader the subtleties and nuances of the processes underlying the formation of structures and phase transitions in various substances, from classical metals and polymers to modern composite materials and nanostructures. If you are interested in physics, materials science or chemistry, this book will be an indispensable source of knowledge and inspiration for you. The book focuses on the fundamental principles of phase equilibria, which allow us to understand how and why certain structural formations arise in substances when environmental conditions change. The author's approach combines rigorous scientific theory and practical analysis, which makes the book useful for both undergraduate and graduate students, and for experienced researchers working in the field of materials science, thermodynamics and structural chemistry. It examines in detail the mechanisms of structure formation, the role of intermolecular interactions and the influence of external factors on the formation of new phases and structures. A special place in the book is occupied by the analysis of modern methods of studying phase equilibria and structural changes. The author's style is distinguished by clarity and logical consistency, which allows even beginners in this area to easily navigate complex concepts. At the same time, the book contains many new ideas and approaches that will be of interest to specialists looking for fresh solutions and theoretical foundations for their experiments and developments. “Phase equilibria and structure formation” is not just a textbook or monograph. This is a guide to the world of microscopic processes that determine the properties of materials and their behavior in various conditions. The author's view, supported by rich practical experience, helps to understand how to manage the processes of structure formation to create new materials with specified properties. This book is especially relevant for those who are engaged in the development of new composites, nanomaterials or looking for ways to improve the efficiency of existing technologies. Book A. C. Lileyeva and E. C. Malyutina is perfect for undergraduate and graduate students studying physics, materials science and chemical technology. It will also interest engineers and researchers working in the development of new materials, as well as teachers looking for modern and in-depth material for their lectures and seminars. It raises topics related to the thermodynamic aspects of phase transitions, structural models, and mechanisms for the formation of new structures, making it a valuable source of knowledge for those who want to understand how to manage structural changes at the micro- and nano-levels. A feature of this book is its ability to connect theory with practice, making it not only a textbook, but also a practical guide for research and engineering tasks. The style of the author is distinguished by accuracy and scientific rigor, while the language remains accessible and understandable, which contributes to the easy perception of complex concepts. In general, “Phase equilibria and structural formation” is a book that deservedly takes its place in the library of everyone who is interested in modern aspects of materials science and physics. It not only expands the horizons of knowledge, but also inspires new discoveries and experiments, making scientific research more exciting and meaningful.