Ahmed, Ehtisham, et al. “FREQUENCY OF CONSERVATIVELY MANAGED TRAUMATIC ACUTE SUBDURAL HAEMATOMA CHANGING INTO CHRONIC SUBDURAL HAEMATOMA”. Journal of Ayub Medical College Abbottabad, vol. 24, no. 1, Mar. 2012, pp. 71-74, https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/2156.