1. Syafrudin, , W.D. Nugraha, S.A. Putri, H.H.A. Matin and Budiyono, 2020. Enhancement of biogas production from rice husk using mechanical pretreatment (grinding) in liquid anaerobic digestion (l-ad). E3S Web Conf., 10.1051/e3sconf/202020208003.
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2. Syafrudin, , W.D. Nugraha, H.H.A. Matin, F. Margaretha and Budiyono, 2020. Optimization of biogas production from water hyacinth by liquid anaerobic digestion (l-ad) using response surface methodology. IOP Conf. Ser.: Mater. Sci. Eng., 10.1088/1757-899x/845/1/012046.
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3. Syafrudin, , W.D. Nugraha, A. Bahrani, H.H.A. Matin and Budiyono, 2020. The effect of grinding on biogas production from rice husk waste during solid state anaerobic digestion (ss-ad). E3S Web Conf., 10.1051/e3sconf/202020208004.
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4. Rinawati, S., S. Rachmawati, I. Suryadi, P. Setyono, H.H.A. Matin, L. Kusumaningrum and S. Suhardono, 2020. Monitoring of noise contour mapping and hearing conservation program of rice milling workers in griyan karanganyar. E3S Web Conf., 10.1051/e3sconf/202020215013.
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5. Rachmawati, S., M. Aktsari, A. Suryaningsih, H.H.A. Matin and I. Suryadi, 2020. Assesment work fatigue to workers in environment underground mining areas based on fatigue assesment scale questionnaires. E3S Web Conf., 10.1051/e3sconf/202020205013.
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6. Matin, H.H.A., S. Syafrudin and S. Suherman, 2020. Solid state anaerobic digestion for biogas production from rice husk. E3S Web Conf., 10.1051/e3sconf/202020208005.
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7. Matin, H.H.A. and H. Hadiyanto, 2020. Effect of naoh on biogas production under ssad conditions along with kinetics studies. Jurnal Ilmu Lingkungan, 18: 319-322.
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8. Matin, H.H.A. and H. Hadiyanto, 2018. Optimization of biogas production from rice husk waste by solid state anaerobic digestion (SSAD) using response surface methodology. J. Environ. Sci. Technol., 11: 147-156.
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9. Matin, H.H.A. and Hadiyanto, 2018. Biogas production from rice husk waste by using solid state anaerobic digestion (ssad) method. E3S Web Conf., 10.1051/e3sconf/20183102007.
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10. Nugraha, W.D., I.H. Ardinata, L.G. Kencanawardhani and H.H.A. Matin, 2017. The influence of total solid (TS) content to biogas production from rice husk waste during solid state anaerobic digestion (SS-AD). Adv. Sci. Lett., 23: 2204-2206.
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11. Nugraha, W.D., H.H.A. Matin and L.G. Kencanawardhani, 2017. The influence of enzymatic pretreatment and food to microorganism (F/M) ratio to biogas production from rice husk waste during solid state anaerobic digestion (SS-AD). Adv. Sci. Lett., 23: 5687-5690.
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12. Nugraha, W.D. and H.H.A. Matin, 2017. Biogas production kinetics from rice husk waste during solid state anaerobic digestion (SS-AD). Adv. Sci. Lett., 23: 5698-5700.
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