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1. Dow Chemical2. Kansas3. Hugoton4. Proppant5. Geertsma and de Klerk6. Perkins, Kern and Nordgren7. discontinuum displacement analysis (DDA)8. extended �nite element method (XFEM)9. heaviside function10. singular function11. traction12. coupled model13. lubrication14. laminar15. Galerkin16. weak form17. picard18. Erdogan-Sih19. driving pressure20. analytical solution21. edge crack

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