Analisis valuasi pada akuisisi perusahaan berbasis aset takberwujud (skill based asset): studi kasus akuisisi oleh PT Elnusa,Tbk = Analysis of valuation in acquisition of intangible asset based (skill based asset) company: study case of acquisition by PT Elnusa,Tbk - Nadapdap, Deny Christian, author (Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019)