diff --git a/Isa_DOF.thy b/Isa_DOF.thy
index d15d08e..4601284 100644
--- a/Isa_DOF.thy
+++ b/Isa_DOF.thy
@@ -1,4 +1,4 @@
-chapter \<open>The Document-Type Support Framework for Isabelle \<close>
+chapter \<open>The Document-Type Support Framework for Isabelle\<close>
 
 text{* Offering reflection to ML for class hierarchies, objects and object states. 
        + Isar syntax for these, assuming that classes entities fit to predefined
@@ -9,7 +9,7 @@ text{* In this section, we develop on the basis of a management of references Is
 that provide direct support in the PIDE framework. *}  
   
 theory Isa_DOF   (* Isabelle Document Ontology Framework *)
-  imports Main (* Isa_MOF *)
+  imports  Main (* Isa_MOF *)
   keywords "section*"    "subsection*"   "subsubsection*" 
            "paragraph*"  "subparagraph*" "text*" "declare_reference"::thy_decl
            and
diff --git a/converter.scala b/converter.scala
index 61e699b..7d7d352 100644
--- a/converter.scala
+++ b/converter.scala
@@ -21,8 +21,9 @@ case object CURLYCLOSE            extends LaTeXToken
 case object BRACKETOPEN           extends LaTeXToken
 case object BRACKETCLOSE          extends LaTeXToken
 
-trait LaTeXCompilationError
-case class LaTeXLexerError(msg: String) extends LaTeXCompilationError
+sealed trait LaTeXCompilationError
+case class LaTeXLexerError (msg: String) extends LaTeXCompilationError
+case class LaTeXParserError(msg: String) extends LaTeXCompilationError
 
 
 object LaTeXLexer extends RegexParsers {
@@ -183,6 +184,9 @@ def transducer (S:List[LaTeXToken]) : List[LaTeXToken] =
 
 /* A more abstract approach, that is based on a two-level parsing approach */
 
+import scala.util.parsing.combinator.Parsers
+import scala.util.parsing.input.{NoPosition, Position, Reader}
+  
 object LaTeXParser extends Parsers {
   override type Elem = LaTeXToken
 
@@ -193,6 +197,20 @@ class LaTeXTokenReader(tokens: Seq[LaTeXToken]) extends Reader[LaTeXToken] {
   override def rest:  Reader[LaTeXToken] = new LaTeXTokenReader(tokens.tail)
 }
 
+def apply(tokens: Seq[LaTeXToken]): Either[LaTeXParserError, LaTeXToken] = {
+    val reader = new LaTeXTokenReader(tokens)
+    program(reader) match {
+      case NoSuccess(msg, next) => Left(LaTeXParserError(Location(next.pos.line, next.pos.column), msg))
+      case Success(result, next) => Right(result)
+    }
+  }
+
+
+def program: Parser[LaTeXToken] = positioned {
+    phrase(block)
+  }
+
+  
 }
 
 /* Unit Testing Zone */
diff --git a/ontologies/LNCS_onto.thy b/ontologies/LNCS_onto.thy
index b89eb90..b739930 100644
--- a/ontologies/LNCS_onto.thy
+++ b/ontologies/LNCS_onto.thy
@@ -6,15 +6,7 @@ begin
 
 doc_class title =
    short_title :: "string option" -- None
-  
-
-(*
-
-text*[tit::title]{* Using an Ontology Framework*} 
-
-*)   
-   
-   
+     
 doc_class subtitle =
    abbrev :: "string option"      -- None
    
@@ -24,7 +16,7 @@ doc_class author =
    affiliation :: "string"
 
 doc_class abstract =
-   keywds :: "string list"        -- None
+   keyword_list :: "string list"        -- None
 
 doc_class text_section = 
    main_author :: "author option" -- None
@@ -36,37 +28,13 @@ doc_class technical = text_section +
    definition_list :: "string list" -- "[]"
 
 doc_class example   = text_section +
-
-text*[tit::title]{* Using an Ontology Framework*} 
-
-*)   
-   
-   
-doc_class subtitle =
-   abbrev :: "string option"      -- None
-   
--- \<open>adding a contribution list and checking that it is cited as well in tech as in conclusion. ? \<close>
-
-doc_class author =
-   affiliation :: "string"
-
-doc_class abstract =
-   keywds :: "string list"        -- None
-
-doc_class text_section = 
-   main_author :: "author option" -- None
-
-doc_class introduction = text_section +
    comment :: string
 
-doc_class technical = text_section +
-   definition_list :: "string list" -- "[]"
-
-doc_class example   = text_section +
-   long_name :: "string" -- "'' ''"
-
 doc_class conclusion = text_section +
    main_author :: "author option" -- None
+   
+doc_class related_work = conclusion +
+   main_author :: "author option" -- None
 
 doc_class bibliography =
    style :: "string option" -- "''LNCS''"
@@ -112,6 +80,7 @@ doc_class article =
 
 -- \<open>other idea: capture the essence of a monitor class as trace.
                 trace would be `predefined id` like `main` in C. \<close>
+text{* @{cite bla} *}
 
 doc_class article' = 
    trace :: "(title + subtitle + author+ abstract +