1. Introduction

2. The Simple Oil Blending Model Revisited

2.1 Recapitulation

2.2 MPS Format

2.3 Improving the Formulation

3. Abstracting the Structure of the Problem

3.1 Concepts

3.2 Writing the Structure Symbolically

3.3 Improving the Quality Constraints

4. A Technique for Model Documentation

4.1 Structure of the Formulation

4.2 Benefits of the Approach

5. Guidelines for Formulating Models

6. The Transportation Problem

7. A Multi-Mix Blending Problem

7.1 The Problem

7.2 The Natural Formulation

7.3 An Alternative Formulation

7.4 Why the Natural Formulation is Better

8. A Processing Problem

8.1 The Problem

8.2 The Formulation

8.3 Commentary

9. Tackling Infeasibility

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