Panagiotis Christos has written:

'Ho Gregorios Palamas kai he theologia' -- subject(s): Hesychasm, Religion

Gian Carlo Montanari is an Italian author known for writing books on history, art, and culture. Some of his notable works include "Michelangelo: The Painter," "Vatican Museums Gallery," and "Art Treasures of Italy."

Hanns Albert Steger is an author known for writing books on topics such as leadership, personal development, and communication skills. Some of his notable works include "The 15-Minute Leader" and "Emotional Intelligence at Work." He often shares practical advice and strategies for professionals looking to enhance their performance in the workplace.