Kharbanda, Kusum, Chitra Sarkar, Amit K. Dinda, Asis K. Karak, Meera Mathur, and Subimal Roy. 1993. “Morphological Appearance, Growth Kinetics and Glial Fibrillary Acidic Protein (GFAP) Expression in Primary in Vitro Explant Culture of Astrocytic Neoplasms”. Acta Oncologica 32 (3):301-6. https://doi.org/10.3109/02841869309093599.