(1)
Thu Thuy, N.; Ai Phuong, D.; Van Den, N.; R. K., M.; V. M., Z. STUDYING QUALITY OF THIN FILM OF POLYPYROMELLITIMIDE, PAPER BY METHOD ATTENUATED TOTAL REFLECTION (ATR) WITH THE HELP OF OPTICAL CONTACT. Science and Technology Development Journal 2000, 3, 40-46.