- Author: Jan Stejskal, Petr Hajek, Oto Hudec
- Language: English
- Year: 2018
- Author: Mohammad Zoynul Abedin M. Kabir Hassan Petr Hajek Mohammed Mohi Uddin
- Language: English
- Year: 2021
- Author: Petr Hajek
- Language: English
- Year: 1998
- Author: Petr Vopenka Petr Hajek
- Language: English
- Year: 1972
- Author: Sam Buss Petr Hajek Pavel Pudlak
- Language: English
- Year: 2000
- Author: Petr Vopenka Petr Hajek
- Language: English
- Year: 1972
- Author: Petr Hajek Pavel Pudlak
- Language: English
- Year: 1998
- Author: Petr Hajek Vicente Montesinos Santalucia Jon Vanderwerff Vaclav Zizler
- Language: English
- Year: 2007