List of Articles Klein Open Access Article Abstract Page Full-Text 1 - Linear energy-momentum tensor for a scalar field in de Sitter space Mohammad Reza Tanhayi Sepideh Mirabi 10.1186/2251-7235-6-24 Open Access Article Abstract Page Full-Text 2 - Kaluza-Klein interacting cosmic fluid cosmological model Kishor S Adhav Meena V Dawande Soniya M Borikar 10.1186/2251-7235-6-33 Open Access Article Abstract Page Full-Text 3 - Designing and validating interactive arts curriculum model based on Klein's elements Davood Akbari Ghoortani maryam bratali Hamid Davazdah emami Open Access Article Abstract Page Full-Text 4 - The Study of the Influence of Klein's Curriculum Components on the 1st grade of High school studentsâ Math Course Drop out: considering the viewpoint of the curriculum counterparts kimia ebrahim kafoori hassan maleki aliakbar khosravi babadi Open Access Article Abstract Page Full-Text 5 - Evaluation of Architectural Engineering Curriculum to Promote Vocational Education Based on Klein Model Majid Yazdani Alireza Rezvani Mohsen vafamehr mohamad hassan khademzade 10.30495/ccd.2022.689602 Open Access Article Abstract Page Full-Text 6 - Validation of play-based preschool education curriculum based on Francis Klein's model. Vadood Shoshtari Gogtapeh mohammad ali mojallal chobglo Jahangir Yari haj atalo Zarin Dneshvar Haris Open Access Article Abstract Page Full-Text 7 - Solving Nonlinear Klein-Gordon Equation with a Quadratic Nonlinear term using Homotopy Analysis Method H. Jafari M. Saeidy M. Arab Firoozjaee Open Access Article Abstract Page Full-Text 8 - The Numerical Solution of Klein-Gorden Equation by Using Nonstandard Finite Difference Hoda Shekarabi Jalil Rashidinia Open Access Article Abstract Page Full-Text 9 - B-SPLINE COLLOCATION APPROACH FOR SOLUTION OF KLEIN-GORDON EQUATION J. Rashidinia F. Esfahani S. Jamalzadeh