“የባሕረ ሐሳብ ትምህርት ለዘመን አቆጣጠር፣ ለከዋክብት እና ለአየር ትንበያ ጥናት መጽሐፈ ሄኖክ መነሻ: ዮኃንስ ደምስ”. Journal-of-Ethiopian-Church-Studies/የኢትዮጵያ-ቤተ-ክርስቲያን-ጥናት-መጽሔት-Live 6, no. 6 (August 10, 2018): 74–103. Accessed December 6, 2025. https://journals.eotcmk.org/index.php/files/article/view/38.