Petko D. Ganchev
Petko Dabeski
Petko Dabeski
Petko Šipinkarovski
Petko Bocharov
Petko Bocharov
Petko Čančar
Petko Čančar
Petko Bratinov
Petko Šipinkarovski
Petko Kaĭkiev
Petko Georgiev
Petko Šipinkarovski
Petko Čančar
Petko Vojnić Purčar
Petko Rachov Slaveĭkov
Petko Rachov Slaveĭkov
Petko Manchev
Petko Domazetovski
Petko Dilkov
Petko Rachov Slaveĭkov
Petko I︠U︡rdanov Todorov
Petko Rachov Slaveĭkov
Petko Iv. Orozoff et fils
Csoma, Gergely
Eustorgio Mariano Aguado Montaño
Yoshikazu Shimizu
Masahiro Satō
I. I. Golʹdin
I. A. Danilova
Lianyuan Tian
Guanghua Wu
Romano Silva
Menglan Shi
Zongyi Hu
Wang, Yi (Inkstick collector)
Gengsheng Bai
Xinbao Ren
Renfeng Wang
Jianguo Shi
Chao Liang
Kenji Takata
Ángel Hernández
Lietuvos socialinių tyrimų centras
Armand Brulhart
Silvia Bonacchi
O. A. Chirkunov
S. S. Zmii︠a︡k
Günter Müchler
Jörg Albrecht
Publications International
Esther Ramharter
Xianshen Zhou
Óscar Santiago Ayala Partida
Ch'an-sik Pak
Kʻetʻevan Gočʻitašvili
Murman Tʻavdišvili
Barbara Weber
Kevin Denys Bonnycastle
Vesna Marjanović
Jiankun Zhang
Wenjuan Du
Zhang Ruitu xue shu yan tao hui (2010 Fuzhou Shi, Fujian Sheng, China)
Baldev K. Vig
ʻAlī Zangīʹābādī
Darejan Sumbaże
United States. Congress. House. Committee on Armed Services
Attila Reisinger
Kuutti Lavonen
Jordi Buch i Oliver
Aloma Rodríguez
Leons Briedis
V. E. Belousov
Mikhail Maslov
Se-ju Yŏ