Ratna Dewi Kusumaningtyas, dkk Chapter 10. Valorization of Sugarcane-Based Bioethanol Industry Waste (Vinasse) to Organic Fertilizer. In: Valorisation of Agro-industrial Residues – Volume II: Non-Biological Approaches. Springer Nature Switzerland AG..

Ratna Dewi Kusumaningtyas, dkk Graphical exergy analysis of reactive distillation column for biodiesel production. International Journal of Exergy.

Ratna Dewi Kusumaningtyas, dkk Mechanical Properties of PP/Clay Nanocomposites Prepared from Masterbatch: Effect of Nanoclay Loadings and Re-Processing. Key Engineering Materials.

Ratna Dewi Kusumaningtyas, dkk Pembuatan Pupuk Organik dan Biopestisida Organik dari Limbah Cair Industri Tahu: Diversifikasi Produk untuk Mendukung Ketahanan Ekonomi UMKM di Masa Pandemi Covid-19. In: INOVASI PRODUK BERBASIS BAHAN LOKAL DI ERA PANDEMI COVID-19. ..

Ratna Dewi Kusumaningtyas, dkk Reactive distillation in the intensification of oleic acid esterification with methanol – A simulation case-study. Journal of Industrial and Engineering Chemistry.