L. E. Mora-Osejo, “TWAS SECOND GENERAL CONFERENCE ‘FUTURE OF SCIENCE IN CHINA ANO IN THE THIRD WORLD’”, Rev. Acad. Colomb. Cienc. Ex. Fis. Nat., vol. 17, no. 64, pp. 153–156, Dec. 1989, doi: 10.18257/raccefyn.17(64).1989.3690.