<dependency>
  <groupId>org.apache.tomcat</groupId>
  <artifactId>el-api</artifactId>
  <version>6.0.20</version>
</dependency>

implementation 'org.apache.tomcat:el-api:6.0.20'

implementation("org.apache.tomcat:el-api:6.0.20")

libraryDependencies += "org.apache.tomcat" % "el-api" % "6.0.20"

@Grapes(
  @Grab(group='org.apache.tomcat', module='el-api', version='6.0.20')
)

<dependency org="org.apache.tomcat" name="el-api" rev="6.0.20" />

[org.apache.tomcat/el-api "6.0.20"]

'org.apache.tomcat:el-api:jar:6.0.20'