Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takahiro Tanaka and Teruaki Suyama and Shuichiro Yokoyama,"Use of δN Formalism : Difficulty of Generating Large Local-Type Non-Gaussianity during Inflation(Chapter II: Cosmological perturbations,Cosmology-The Next Generation-) :",Progress of theoretical physics = 理論物理学の進歩,0033068X,Kyoto : Publication Office,2011,[126],-,135-142,https://cir.nii.ac.jp/crid/1520010379982212480,https://doi.org/10.1143/ptps.190.135