Bayona, G., C. Silva, A. E. Rapalin, V. Costanzo-Álvarez, M. Aldana, and J. Roncancio. “A PALEOMAGNETIC AND ROCK MAGNETIC STUDY IN THE SALDAÑA FORMATION AND OVERLYING CRETACEOUS UNITS IN THE NORTHERN UPPER MAGDALENA VALLEY, COLOMBIA”. Boletín De Geología, vol. 27, no. 2, Aug. 2010, https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/887.