This publication discusses both the successes and deficiencies, of Colorado’s “Taxpayer’s Bill of Rights” (TABOR) and offers some recommendations for reform.

http://smile.amazon.com/Colorado-Taxpayers-Bill-Rights/dp/1576552624/ref=sr_1_8?ie=UTF8&qid=1523895152&sr=8-8&keywords=Robert+G.+Natelson