Algorithms 12 Proper circular-arc graphs 10 Unit circular-arc graphs 10 Graph theory 8 Helly circular-arc graphs 8 Cavity resonators 6 Circular-arc graphs 6 Mathematical models 6 Circular-arc graph 4 Co-bipartite circular-arc graphs 4 Surveys 4 Algorithm 2 Approximation theory 2 Characterization 2 Circular-arc model 2 Circulations 2 Forbidden induced subgraphs 2 Forbidden subgraphs 2 Graph algorithms 2 Graphic methods 2 If there are 2 Intersection graph 2 Interval graph 2 Linear programming 2 Natural generalization 2 Networks 2 Normal circular-arc graphs 2 Paper 2 Polynomial approximation 2 Polynomial recognition 2