Shiva Purana
आदित्यो भास्करो भानू रविश्चेत्यनुपूर्वशः ॥ अर्को ब्रह्मा तथा रुद्रो विष्नुश्चादित्यमूर्तयः ॥ १०३ ॥
The sun-god, Bhaskara, Bhānu and Ravi are the four planetary systems, respectively. The sun, Brahma, Rudra and Vishnu are the forms of the sun.
english translation
Adityo bhAskaro bhAnU ravizcetyanupUrvazaH ॥ arko brahmA tathA rudro viSnuzcAdityamUrtayaH ॥ 103 ॥
hk transliteration by Sanscript