The Cambridge History of Iran. — Cambridge University Press, 1975. — vol. 4. — p. 506 "He was handed to Afshin's troops by Sahl b. Sunbadh, an Armenian prince in 222/836-7, and executed in Samarra (223/837) while his brother and assistant 'Abd-Allah was delivered to the prince of Tabaristan, Ibn Sharvin, who had him put to death in Baghdad."
Human Rights Watch. Playing the "Communal Card". Communal Violence and Human Rights: "By early 1992 full-scale fighting broke out between Nagorno-Karabakh Armenians and Azerbaijani authorities." / "...Karabakh Armenian forces—often with the support of forces from the Republic of Armenia—conducted large-scale operations..." / "Because 1993 witnessed unrelenting Karabakh Armenian offensives against the Azerbaijani provinces surrounding Nagorno-Karabakh..." / "Since late 1993, the conflict has also clearly become internationalized: in addition to Azerbaijani and Karabakh Armenian forces, troops from the Republic of Armenia participate on the Karabakh side in fighting inside Azerbaijan and in Nagorno-Karabakh."
Human Rights Watch. The former Soviet Union. Human Rights Developments: "In 1992 the conflict grew far more lethal as both sides—the Azerbaijani National Army and free-lance militias fighting along with it, and ethnic Armenians and mercenaries fighting in the Popular Liberation Army of Artsakh—began."
The Cambridge History of Iran. — Cambridge University Press, 1975. — vol. 4. — p. 506 "He was handed to Afshin's troops by Sahl b. Sunbadh, an Armenian prince in 222/836-7, and executed in Samarra (223/837) while his brother and assistant 'Abd-Allah was delivered to the prince of Tabaristan, Ibn Sharvin, who had him put to death in Baghdad."
Robert H. Hewsen, Armenia: A Historical Atlas. The University of Chicago Press, 2001, pp. 119, 155, 163, 264–65.
Human Rights Watch. Playing the "Communal Card". Communal Violence and Human Rights: "By early 1992 full-scale fighting broke out between Nagorno-Karabakh Armenians and Azerbaijani authorities." / "...Karabakh Armenian forces—often with the support of forces from the Republic of Armenia—conducted large-scale operations..." / "Because 1993 witnessed unrelenting Karabakh Armenian offensives against the Azerbaijani provinces surrounding Nagorno-Karabakh..." / "Since late 1993, the conflict has also clearly become internationalized: in addition to Azerbaijani and Karabakh Armenian forces, troops from the Republic of Armenia participate on the Karabakh side in fighting inside Azerbaijan and in Nagorno-Karabakh."
Human Rights Watch. The former Soviet Union. Human Rights Developments: "In 1992 the conflict grew far more lethal as both sides—the Azerbaijani National Army and free-lance militias fighting along with it, and ethnic Armenians and mercenaries fighting in the Popular Liberation Army of Artsakh—began."