This method is today called the Dandelin - Gräffe method since Dandelin also independently investigated it, but only in Russia does the method appear to be named after Lobachevsky who is the third independent discoverer.
Ang paraan na ito ay tinatawag na ngayon ang Dandelin - Gräffe paraan dahil Dandelin din malaya investigated ito, ngunit lamang sa Rusya ay ang paraan ay pinangalanang Lobachevsky matapos na ito ay ang third independent deskubridor.