APA (7th ed.) Citation

El-Hassan, E., & unknown. (1991). Flavor conserving flavor changing radiative decays of vector mesons in Quark model.

Chicago Style (17th ed.) Citation

El-Hassan, El-Aaoud, and unknown. Flavor Conserving Flavor Changing Radiative Decays of Vector Mesons in Quark Model. 1991.

MLA (9th ed.) Citation

El-Hassan, El-Aaoud, and unknown. Flavor Conserving Flavor Changing Radiative Decays of Vector Mesons in Quark Model. 1991.

Warning: These citations may not always be 100% accurate.