diff --git a/src/lib.rs b/src/lib.rs
index 89fb168..45b653c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -94,9 +94,9 @@
 //!
 //!
 //! ### References
+//! 
 //! \[1\]: Toshio Fukushima.
-//! **Precise and fast computation of Lambert W function by piecewise minimax
-//! rational function approximation with variable transformation**.
+//! **Precise and fast computation of Lambert W function by piecewise minimax rational function approximation with variable transformation**.
 //! DOI: [10.13140/RG.2.2.30264.37128](https://doi.org/10.13140/RG.2.2.30264.37128).
 //! November 2020.