can_api()
Test whether API can be reached
get_cr_token()
Accessing the plus API pool
get_cr_mailto()
Accessing the polite API pool
pools() req_auth_pool() resp_cr_pool() was_pool() can_pool() could_pool() best_pool()
pools()
req_auth_pool()
resp_cr_pool()
was_pool()
can_pool()
could_pool()
best_pool()
Accessing different Crossref API pools
req_cr()
Use the Crossref REST API