"rigorous restriction" is a correct and usable phrase in written English.
It means a strict or severe limitation on something. Example: The government imposed rigorous restrictions on the sale of alcohol in an effort to reduce alcohol-related crimes and accidents.
Historical preservation laws known as denkmalschutz place even more rigorous restrictions on almost any change.
Specifically, it should call on its European allies to impose more rigorous restrictions on exports to Libya that could be used to produce chemical weapons.
These restaurants are heavily taxed by the state and subject to rigorous restrictions as to size and menu, restrictions that are generally observed in the breach, and they continue to flourish.
Rigorous restrictions on reporting the news have been put in place as the army attempts to fight off a critical campaign for the Jaffna Peninsula by the Tamil Tiger rebels.
There could, however, be some kind of trade-off whereby the West would tolerate a civilian nuclear programme (which is all Iran has, it says) in return for more rigorous restrictions on it.
While it is important to put in place appropriate restrictions, it is not wise to put overly rigorous restrictions on fisheries in the Barents Sea as this would run contrary to the global needs for increased sustainable fishing to help feed a growing global population.
The third is that the US imposes rigorous restrictions on high-tech exports to China.
Developers of modern diesel engines have to face rigorous restrictions in emission of nitrogen-oxides and particulate matter.
In 1982, under the wizard dictator Ne Win, the Rohingya were stripped of their citizenship and were subject to rigorous restrictions controlling their right to marry, travel, work, or reproduce, rules that were placed on no other group in the nation.
The 28/2005 law imposes rigorous restrictions in indoor workplaces, with no options for 'smoking rooms', but has wide exemptions for bars and restaurants.
