APA (7th ed.) Citation

Valerio, V. On the challenging problem to estimate the energy of the Ultra High Energy Cosmic Rays. EDP Sciences.

Chicago Style (17th ed.) Citation

Valerio, Verzi. On the Challenging Problem to Estimate the Energy of the Ultra High Energy Cosmic Rays. EDP Sciences.

MLA (9th ed.) Citation

Valerio, Verzi. On the Challenging Problem to Estimate the Energy of the Ultra High Energy Cosmic Rays. EDP Sciences.

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