Gómez Sánchez-manzano, Eusebio, and Miguel Gómez-villegas. “Three Methods for Constructing Reference Prior Distributions”. Revista Matemática Complutense, vol. 3, no. 2, Jan. 1990, p. 153, https://doi.org/10.5209/rev_REMA.1990.v3.n2.18021.