Unknown
Nasution, M K M
;
Sitepu, Runtung
;
Rosmayati,
;
[et al.]
Ganis Siregar, M F
;
Syam, Bustami
;
Sihombing, Luhut
;
Farhat,
;
Rambe, A S
;
Ginting, Budiman
;
Hasanuddin,
;
Maulina, Seri
;
Ramli,
;
Boel, Trelia
;
Agustono, Budi
;
Sebayang, Kerista
;
Amin, Muriyanto
;
... and further 84
Institute of Physics