↑ Richard Francis Burton: "Letters from the Battlefields of Paraguay", p.76 – Tinsley Brothers Editors – London (1870) – Burton, as a witness of the conflict, marks this date as the real beginning of the war. He writes: "The Brazilian Army invades the Banda Oriental, despite the protestations of President López, who declared that such invasion would be held a 'casus belli'."
↑ Byron Farwell, The Encyclopedia of Nineteenth-Century Land Warfare: An Illustrated World View, New York: WW Norton, 2001. Page 824.
↑ Theo ước đoán dân số tiền chiến là 1.337.437, tụt xuống còn 221.709 (28.746 nam, 106.254 nữ, 86.079 trẻ nhỏ) (War and the Breed, David Starr Jordan, p. 164. Boston, 1915; Applied Genetics, Paul Popenoe, The Macmillan Company, New York, 1918)
↑ Jurg Meister, Francisco Solano López Nationalheld oder Kriegsverbrecher?, Osnabrück: Biblio Verlag, 1987. 345, 355, 454-5.
