Both ASBR1 and ASBR2 advertise defaults into the network, expecting to have the capability to route to the Internet through BGP-learned routes. In this case, ASBR2 is already up, fully converged. However, if ASBR1 reloads, when it comes back up, OSPF is likely to converge faster than BGP. As a result, ASBR1 will advertise its [...]

Autonomous system path filtering with regular expressions
String matching—A string of characters in the regular expression matches any equivalent substring in the autonomous system path; 29 has three matches in | 210 291 1296 29 |, for example.
String matching alternatives—The pipe symbol (|) means “or.”
String matching ranges and wildcards—Brackets ([ ]) can be used for ranges, [...]

You probably already took a look at Managing unstable routes with BGP as that post applies to all routes. But what if you wanted to manage one or two specific routes with BGP dampening. You do this in a route-map.
Match the route in ACL
# access-list 10 permit 10.10.10.0 0.0.0.255
Insert ACL into Route-map and set the [...]