Shiva Purana
वृषाकपिश्च शम्भुश्च कपर्दी रैवतस्तथा ॥ एकादशैते कथिता रुद्रास्त्रिभुवनेश्वराः ॥ ३८ ॥
Vrishakapi Shambhu Kapardhi and Raivata These eleven Rudras are described as the lords of the three worlds.
english translation
vRSAkapizca zambhuzca kapardI raivatastathA ॥ ekAdazaite kathitA rudrAstribhuvanezvarAH ॥ 38 ॥
hk transliteration by Sanscript