How to add reference to a method parameter in javadoc?

Is there a way to add references to one or more of a method's parameters from the method documentation body? Something like:

/**
 * When {@paramref a} is null, we rely on b for the discombobulation.
 *
 * @param a this is one of the parameters
 * @param b another param
 */
void foo(String a, int b)
{...}