<dependency>
  <groupId>com.netflix.rxjava</groupId>
  <artifactId>rxjava-core</artifactId>
  <version>0.8.4</version>
</dependency>

implementation 'com.netflix.rxjava:rxjava-core:0.8.4'

implementation("com.netflix.rxjava:rxjava-core:0.8.4")

libraryDependencies += "com.netflix.rxjava" % "rxjava-core" % "0.8.4"

@Grapes(
  @Grab(group='com.netflix.rxjava', module='rxjava-core', version='0.8.4')
)

<dependency org="com.netflix.rxjava" name="rxjava-core" rev="0.8.4" />

[com.netflix.rxjava/rxjava-core "0.8.4"]

'com.netflix.rxjava:rxjava-core:jar:0.8.4'