L. Pacheco

Measurement of anisotropic development in a low-rank coal using e.s.r. spectroscopy and optical texture

J. Rincón, R. Carvajal, L. Pacheco, 1985 .

Structure in metallurgical cokes and carbons as studied by etching with atomic oxygen and chromic acid

H. Marsh, M. Forrest, L. Pacheco, 1981 .

Assesment of quality of coal-heavy oil interaction products by means of fluorescence spectroscopy

J. Rincón, L. Henao, L. Pacheco, 1995 .