@Book{BVMC:685919, author = {Olea, Heliodoro}, title = {[Carta de Heliodoro Olea y otros a Francisco I. Madero (Chihuahua), 29 de marzo de 1911]}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2014}, year = {2014}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc4f3m8} }