Shiva Purana
मल्लिकार्जुनसंभूतमुपलिंगमुदाहृतम् ॥ रुद्रेश्वरमिति ख्यातं भृगुकक्षे सुखावहम् ॥ ३६॥
The Upaliṅga of Mallikārjuna is glorified as Rudreśvara. It is pleasing and is stationed in Bhṛgukakṣa.
english translation
mallikArjunasaMbhUtamupaliMgamudAhRtam ॥ rudrezvaramiti khyAtaM bhRgukakSe sukhAvaham ॥ 36॥
hk transliteration by Sanscript