"NEARLY DEGENERATE 2-WAVE MIXING IN SATURABLE ABSORBERS", ZILIO SC, PENAFORTE JC, GOUVEIA EA, BELL MJV, OPTICS COMMUNICATIONS 86, 81 (1991).

"THE EFFECTS OF STIMULATED RAMAN-SCATTERING AND DISPERSIVE SELF-PHASE MODULATION IN THE SPECTRAL EVOLUTION OF PULSES IN SINGLE-MODE FIBERS", HICKMANN JM, MARTINS JF, GOMES ASL, OPTICS COMMUNICATIONS 84, 327 (1991).

"RAMAN AMPLIFICATION OF GAIN SWITCHED LASER DIODE SIGNAL AT 1.35 MU-M TO SOLITON POWER LEVELS", GREER EJ, HICKMANN JM, TAYLOR JR, ELECTRONICS LETTERS 27, 1171 (1991).

"MODULATION INSTABILITY IN THE REGION OF MINIMUM GROUP-VELOCITY DISPERSION OF SINGLE-MODE OPTICAL FIBERS VIA AN EXTENDED NONLINEAR SCHRODINGER-EQUATION", CAVALCANTI SB, CRESSONI JC, DACRUZ HR, GOUVEIANETO AS , PHYSICAL REVIEW A 43, 6162 (1991).

"NONDEGENERATE 2-WAVE MIXING IN GDALO3-CR3+ ", PENAFORTE JC, GOUVEIA EA, ZILIO SC, OPTICS LETTERS 16, 452 (1991).

"THEORY OF STRUCTURAL TRENDS WITHIN THE SP BONDED ELEMENTS", CRESSONI JC, PETTIFOR DG, JOURNAL OF PHYSICS-CONDENSED MATTER 3, 495 (1991).