Speleological study of the cavern of the Ecce homo hill, in the municipality of Chimichagua, Cesar Frank David Lascarro-Navarro, Fernando Miguel Cormane-Tamayo, Elías Ernesto Rojas-Martínez PDF (Español)
Comparison of nonparametric estimators versus parametric for reliability function Javier Ramírez-Montoya PDF (Español)
New record of Pseudocidaris sp. (Echinoidea:Hemicidaridae) of lower Cretaceous (Valanginian-Hauterivian) from Zapatoca, (Santander Colombia). Javier Hernando Jerez-Jaimes, Alvaro Sergio Osma-Duarte, Joan Sebastián Puentes-Pérez PDF (Español)
Justification for a regulatory proposal for sound broadcasting and transmobile services in Colombian borders Natalia Andrea Duarte-Pinilla, Hernán Paz-Penagos PDF (Español)
The Doherty Power Amplifier with pre-amplification stage Jonathan Javier Tinjacá-Soler, William Alexander Cuevas-Carrero, Edison Ferney Angarita-Malaver, Jorge Julián Moreno-Rubio PDF (Español)
Robust Controller LMI for helicopter with two degrees of freedom Oscar Iván Higuera-Martínez, Juan Mauricio Salamanca PDF (Español)
