Shiva Purana
विद्येश्वराख्या तत्राद्या द्वितीया रुद्रसंहिता ॥ तृतीया शतरुद्राख्या कोटिरुद्रा चतुर्थिका ॥ ५९ ॥
The first of these is the Vidyesvara, and the second is the Rudra-saṁhitā. The third is called Shatarudra and the fourth is called Kotirudra.
english translation
vidyezvarAkhyA tatrAdyA dvitIyA rudrasaMhitA ॥ tRtIyA zatarudrAkhyA koTirudrA caturthikA ॥ 59 ॥
hk transliteration by Sanscript