8. dani Društva plastičara i gumaraca, Zagrebački velesajam, 7 - 11. ožujak 1988. = 8th Days of Plastics and Rubber Engineers Society : [zbornik radova = conference proceedings] - Orlić, Rajko; Raos, Pero; Šercer, Mladen (Društvo plastičara i gumaraca = Society of Plastics and Rubber Engineers Society, 1988)