Ahmed Mohammed, D., Sayed Hassan, A., Mohammed Aly, A. M. (2018). 'THE IMPACT OF COURTYARDS ON THE THERMAL PERFORMANCE OF BUILDING SPACES IN THE UNIVERSITY BUILDINGS OF THE UPPER EGYPT DURING THE COLD PERIOD: (FACULTY OF AGRICULTURE BUILDING, SOHAG UNIVERSITY "NEW CAMPUS") AS A CASE STUDY', JES. Journal of Engineering Sciences, 46(No 5), pp. 630-641. doi: 10.21608/jesaun.2018.114997