Küçükçifiçi, Selda, Smith, Benjamin R., and Yazici, Emine Şule. 2013. “The Full Metamorphosis of λ-Fold Block Designs With Block Size Four into λ-Fold Kite Systems”. Utilitas Mathematica 90 (May). https://utilitasmathematica.com/index.php/Index/article/view/1000.