List of Articles Scale factor Open Access Article Abstract Page Full-Text 1 - Non-singular model of universe Seyed Ali Sebt Mohamad Reza Abolhassani Ana Khajehnezhad 10.30495/jtap.152107 Open Access Article Abstract Page Full-Text 2 - The generalized second law of thermodynamics in f(R) gravity for various choices of scale factor Rahul Ghosh Surajit Chattopadhyay 10.1186/2251-7235-6-27