The Battle of Kowel is covered on pages 89-106 of Armor Battles of the Waffen SS, 1943-45, by Will Fey. The account is written by Obersturmführer Nicolussi-Leck, commander of 8th company, SS Panzer Regiment 5, who lead the breakthrough into Kowel. He was already heavily engaged with Russian Flak and artillery units and had determined it was "impossible to stop", when he disregarded orders from battalion commander Bolm to stop. "...apart from that, he was not my superior."
I'm sure this is to be found in other books as well, but this account was writted by the officer in question.