diff --git a/code/rust/src/graphs/tarjan.rs b/code/rust/src/graphs/tarjan.rs
index 06b5c01..fcc7aea 100644
--- a/code/rust/src/graphs/tarjan.rs
+++ b/code/rust/src/graphs/tarjan.rs
@@ -6,7 +6,7 @@ use std::fmt::Display;
 use std::hash::Hash;
 use std::collections::HashMap;
 
-use crate::core::utils;
+use crate::value_min;
 use crate::core::log::log_debug;
 use crate::stacks::stack::Stack;
 use crate::graphs::graph::Graph;
@@ -44,10 +44,15 @@ pub fn tarjan_algorithm<T>(gph: &Graph<T>, debug: bool) -> Vec<Vec<T>>
 fn tarjan_visit<T>(gph: &Graph<T>, v: &T, ctx: &mut Context<T>)
     where T: Eq + Hash + Clone + Copy + Display
 {
-    if !(ctx.get_state(v) == State::UNTOUCHED) {
-        return;
-    }
+    // do nothing, if v already visited
+    if !(ctx.get_state(v) == State::UNTOUCHED) { return; }
 
+    /****************
+     * First visit of v.
+     * - Place v on stack.
+     * - Initialise visit-index + component-index.
+     * - After each rekursiv call, only those  all
+     ****************/
     ctx.max_index += 1;
     ctx.push(v);
     ctx.set_root(v, ctx.max_index);
@@ -57,13 +62,12 @@ fn tarjan_visit<T>(gph: &Graph<T>, v: &T, ctx: &mut Context<T>)
     // depth first search:
     for u in gph.successors(&v) {
         tarjan_visit(gph, &u, ctx);
-        // remains relevant for v, provided u still in Stack:
-        if ctx.stack.elements.contains(&u) {
-            let root = utils::min(
-                ctx.get_root(&u),
-                ctx.get_root(v)
-            );
-            ctx.set_root(v, root);
+        /****
+         * u is in the same component as v, if and only if u is still on the stack.
+         * In this case, update the associated component-index of v:
+         ****/
+        if ctx.stack.contains(&u) {
+            ctx.set_root(v, value_min!(ctx.get_root(v), ctx.get_root(&u)));
         }
     }
     ctx.set_state(v, State::FINISHED);
@@ -169,8 +173,8 @@ impl<T> Context<T>
     }
 
     fn log_info(self: &Self, u: &T) {
-        if !self.debug { return; }
         let info = self.get_info(&u);
+        if !self.debug { return; }
         log_debug!("node, index, component: ({}, {}, {})", info.node, info.index, info.root);
     }
 }