Luehrman, Timothy A., and James Quinn. "Groupe Ariel S.A.: Parity Conditions and Cross-Border Valuation, Faculty Spreadsheet (Brief Case)." Harvard Business School Spreadsheet Supplement 104-198, ...
Luehrman, Timothy A., and James Quinn. "Groupe Ariel S.A.: Parity Conditions and Cross-Border Valuation (Brief Case)." Harvard Business School Teaching Note 104-195, April 2010.