Petrobras Argentina S.A. to Present Live, Online at RetailInvestorConferences.com on April 7th

BUENOS AIRES, Argentina, April 5, 2011 /PRNewswire/ -- Petrobras Argentina S.A. (Buenos Aires: PESA –NYSE: PZE) announces that Maria Izabel Ramos, Manager of Investor Relations for Petrobras – Petroleo Brasileiro S.A., will present at RetailInvestorConferences.com.

This will be a live, interactive online event where investors are invited to ask the company questions in real-time both in the presentation hall as well as the company's "virtual trade booth." If attendees are not able to join the event live in real-time, an on-demand archive will be available for 90 days.

It is recommended that investors pre-register to save time and receive event updates.

About Petrobras:

Founded in 1953, Petrobras is a publicly traded corporation operating in an integrated manner in the following segments of the oil, gas, and energy industry: exploration and production; downstream, marketing, transportation and petrochemicals; distribution; natural gas, energy and biofuels. Acknowledged as the leader in deep and ultra-deep water exploration and production, Petrobras is currently the world's third largest energy company (source: PFC Energy, 2010), and the best managed company in Latin America (source: Euromoney, 2010).

About RetailInvestorConferences.com:

RetailInvestorConferences.com, created by BetterInvesting (NAIC), PR Newswire and MUNCmedia, is the first monthly virtual investor conference series that provides an interactive forum for presenting companies to meet directly with retail investors using a graphically-enhanced online platform.

Designed to replicate the look and feel of location-based investor conferences, Retail Investor Conferences unites PR Newswire's leading-edge online conferencing and investor communications capabilities with BetterInvesting's extensive retail investor audience network and MUNCmedia's sophisticated retail investor targeting.

SOURCE Petrobras