Logback-core

<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-core</artifactId>
    <version>1.1.12</version>
</dependency>

compile group: 'ch.qos.logback', name: 'logback-core', version: '1.1.12'

compile 'ch.qos.logback:logback-core:1.1.12'

libraryDependencies += "ch.qos.logback" % "logback-core" % "1.1.12"

<dependency org="ch.qos.logback" name="logback-core" rev="1.1.12"/>

@Grapes(
            @Grab(group='ch.qos.logback', module='logback-core', version='1.1.12')
        )

[ch.qos.logback/logback-core "1.1.12"]

'ch.qos.logback:logback-core:jar:1.1.12'