@article{tordoya2005formas,
author = "L. Tordoya",
title = "Formas Espaciales Geometría No-Euclidiana",
year = 2005,
journal = "Revista Boliviana de Matemática",
publisher = "Carrera de Matemática - Universidad Mayor de San Andrés",
volume = 3,
number = 2,
pages = "10-16",
url = "http://cmat.umsa.bo/revmat/rbm32/tordoyageono.pdf"
}