His book is called:
"Lord Jesus Christ: Devotion to Jesus in Earliest Christianity"
(by Larry W. Hurtado)
Here is a link to an essay Mr. Hurtado wrote regarding his book. The essay is entitled:
"EARLY DEVOTION TO JESUS:
A REPORT, REFLECTIONS AND IMPLICATIONS"
L. W. Hurtado, University of Edinburgh
Jesus-Devotion in Recent Study