%0 Journal Article %T An integrated approach for detecting and quantifying the topic evolutions of patent technology: a case study on graphene field %A Wu, Hong %A Yi, Huifang %A Li, Chang %J "Scientometrics" %V 126 %N 8 %P 6301-6321 %@ 0138-9130 %D 2021-06-18 %I Springer International Publishing %~ DeepDyve