# S4

> line of Esko Prague

**Wikidata**: [Q107983587](https://www.wikidata.org/wiki/Q107983587)  
**Source**: https://4ort.xyz/entity/s4-q107983587


## References

1. [Source](https://pid.cz/wp-content/uploads/mapy/schemata-trvala/Esko.pdf?x77800)
2. [Source](https://pid.cz/wp-content/uploads/mapy/schemata-trvala/Esko-schema.pdf)