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Retno Sari and Sandra Tunggadewi and Abhimata Paramanandana and Helmy Yusuf (2019) Preparation and Physical Characterization of Andrographolide-Chitosan-Alginate Microparticles prepared by Ionic Gelation–Freeze Drying. Research Journal of Pharmacy and Technology, 12 (2). pp. 553-557. ISSN 0974360X

Achmad Dzihan Shaghiera and Prihartini Widiyanti and Helmy Yusuf (2018) Synthesis and Characterization of Injectable Hydrogels with Varying Collagen–Chitosan–Thymosin β4 Composition for Myocardial Infarction Therapy. Journal of Functional Biomaterials, 9 (2). pp. 1-11. ISSN 2079-4983

Dwi Setyawan and Rachel Olivia Jovita and Muhammad Iqbal and Abhimata Paramanandana and Helmy Yusuf and Maria LAD Lestari (2018) Cocrystalization Of Quercetin-Malonic Acid Using Solvent-Drop Grinding Method. Tropical Journal of Pharmaceutical Research, 17 (6). ISSN 1596-5996

Nur Aini Mulyadi and Helmy Yusuf and Noorma Rosita (2018) Solid State Characterization of Dried Liposomes in The Presence of Sucrose and HPMC as Dispersing Matrix. Bangladesh Pharmaceutical Journal, 21 (1). pp. 16-23. ISSN 0301-4606

Dwi Setyawan and A. Ahmad Fadhil and Dayanara Juwita and Helmy Yusuf and Retno Sari (2017) Enhancement of solubility and dissolution rate of quercetin with solid dispersion system formation using hydroxypropyl methyl cellulose matrix. Thai Journal of Pharmaceutical Sciences, 41 (3). pp. 112-116. ISSN 0125-4685

Agrippina Waya Rahmaning Gusti and Prihartini Widiyanti and Helmy Yusuf (2017) Synthesis and Characterization of Bacterial Cellulose - Garcinia mangostana Extract as Anti Breast Cancer Biofilm Candidate. Journal of Biomimetics, Biomaterials and Biomedical Engineering, 30. pp. 76-85. ISSN 2296-9845

Dwi Setyawan and A. Ahmad Fadhil and Dayanara Juwita and Helmy Yusuf and Retno Sari (2017) Enhancement of solubility and dissolution rate of quercetin with solid dispersion system formation using hydroxypropyl methyl cellulose matrix. Thai Journal of Pharmaceutical Sciences, 7 (3). pp. 112-116. ISSN 0125-4685

Helmy Yusuf and Raditya Nugraheni and Nur Aini Mulyadi and Dwi Setyawan (2017) Phase Behavior of Dried – DDA Liposomal Formulation Dispersed in HPMC Matrix in the presence of Saccharides. International Journal of Pharm Tech Research, 10 (1). pp. 50-56. ISSN 0974-4304

Helmy Yusuf and Nugraheni, Raditya and Mulyadi, Nur Aini and Setyawan, Dwi and Rosita, Noorma (2017) Phase Behavior of Dried-DDA Liposomal Formulation Dispersed in HPMC Matrix in the presence of Saccharides. International Journal of Pharm Tech Research, 10 (1). pp. 50-56. ISSN 0974-4304

Helmy Yusuf and Raditya Weka Nugraheni and Dwi Setyawan (2017) Physical Characteristics of Liposomal Formulation dispersed in HPMC Matrix and Freeze-Dried using Maltodextrin and Mannitol as Lyoprotectan. Pharmaceuticals Journal, 23.

Dwi Setyawan and Retno Sari and Helmy Yusuf and Riesta Primaharinastiti (2013) Preparation And Characterization Of Artesunate - Nicotinamide Cocrystal By Solvent Evaporation And Slurry Method. Asian Journal of Pharmaceutical and Clinical Research, 7 (1). pp. 62-65. ISSN 0974 – 2441

Book Section

Retno Sari and M.L.L. Sugiarto and W. Amirah and Helmy Yusuf (2018) The Effect of Chitosan Type and Concentration on Physical Characteristics and Drug Release Behavior of Andrographolide-Chitosan Microparticles Prepared by Ionic Gelation – Freeze Drying. In: Proceedings of International Conference on Applied Pharmaceutical Sciences (ICoAPS) 2018. Elsevier, Surabaya, pp. 60-68.