Penman S. Financial Statement Analysis and Security Valuation

5th edition. — McGraw-Hill Education, 2013. — 760 p. — ISBN: 0078025311, 9780078025310.Financial statements are the lens of a business. Financial statement analysis calibrates the lens to bring the business into focus. Imperfections in the financial statements can dirty the lens and distort the picture. Financial statement analysis deals with the imperfections in financial statements to improve the focus.