https://eng.libretexts.org/Bookshelves/Environmental_Engineering_(Sustainability_and_Conservation)/Book%3A_Energy_Markets_Policy_and_Regulation/06%3A_Restructuring_and_Deregulation_in_the_Electric_Power_Industry/6.02%3A_New_Page
6.2: What went wrong with rate of return regulation? - Engineering LibreTexts
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https://www.gov.uk/hmrc-internal-manuals/debt-management-and-banking/dmbm523190
DMBM523190 - Debt and return pursuit: PAYE: Regulation 72 (5) Income Tax (Pay As You Earn)...
income taxdebtreturnpursuitpaye