Nalini Ravishanker, Zhiyi Chi and Dipak K. Dey are Professors in the Department of Statistics at the University of Connecticut, Storrs, USA.
"""A First Course in Linear Model Theory is an excellent graduate-level textbook that comprehensively covers the now classical linear regression model. Its well-structured organization, thorough mathematical review, and clear presentation of core concepts make it an excellent, self-contained resource for a first course in linear models, both for instructors and students. Moreover, the book offers numerous examples, several exercises (some with solutions), R code, and detailed proofs for key results, making it also a good resource for self-study."" Carlos Cinelli, University of Washington USA, The American Statistician, October 2023."