He was joined by fellow grand slam winners Roger Federer, Novak Djokovic and Rafael Nadal in demanding stricter tests and in March the International Tennis Federation announced it would be introducing a Biological Passport program - a more stringent control against doping.
CNN: Murray condemns 'cover up' in Operation Puerto doping case
There is absolutely no doubt that we need tough and stringent gun control.
Industry experts argue that during this time-consuming process, competitors from countries with less stringent export control enforcement can make inroads into the market.
Kennedy, who was assassinated in 1968 -- has criticized her Republican opponent, Robert Ehrlich, for his opposition to more stringent gun control measures.
Obama appointed a task force to consider more stringent gun control.
It remains unclear what effect the measures will have on New York's already stringent approach to gun control.
This has been achieved through extensive development, strict quality control, and a stringent pre-production testing requirement of 400 drives passing 500 hours of intensive tests with zero errors.
The fact that West German and other allied manufacturers are now able to produce machines tools with accuracies better than plus-or-minus 3 microns has prompted some to argue that the present export control standard is too stringent.
She insisted providers adhered to stringent "procurement policies and procedures for sourcing and ensuring quality control of food products for school menus".
Some gun-control advocates said the legislation gave New York the nation's most stringent firearms laws.
In return for the bailout, Bangkok must meet certain stringent conditions -- such as reducing the current-account deficit and keeping inflation under control -- through a tough austerity program.
This means the control systems and the reliability of technology in police labs do not have to meet the same stringent standards as their private counterparts.
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