diff --git a/README.md b/README.md
index c221919..3af504e 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,7 @@
 # python-zbMathRest2Oai
 Read data from the zbMATH Open API https://api.zbmath.org/docs and feed it to the OAI-PMH server https://oai.portal.mardi4nfdi.de/oai/
+
+Hint for a proper installation:
+
+_ point to the directory
+_ execute "pip install -e requirements.txt"
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diff --git a/requirements.txt b/requirements.txt
index e69de29..945c9b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -0,0 +1 @@
+.
\ No newline at end of file
diff --git a/src/zbmath_rest2oai/getWithSwagger.py b/src/zbmath_rest2oai/getWithSwagger.py
index c2c25d9..9c2d3cc 100644
--- a/src/zbmath_rest2oai/getWithSwagger.py
+++ b/src/zbmath_rest2oai/getWithSwagger.py
@@ -1,7 +1,44 @@
 import swagger_client
 from zbmath_rest2oai.xml_writer import create_document
+from xml.dom import minidom
 
 api_instance = swagger_client.DocumentApi(swagger_client.ApiClient())
 res = api_instance.get_document_by_zbmath_id_document_id_get(id="6383667")
 doc = res.result
-print(create_document(doc).toprettyxml())
+xmld = create_document(doc)
+
+
+ron = xmld.createElement("oai_zb_preview:zbmath")
+ron.setAttributeNS(
+    "xmls",
+    "xmlns:oai_zb_preview",
+    "https://zbmath.org/OAI/2.0/oai_zb_preview/",
+)
+ron.setAttributeNS(
+    "xmls",
+    "xmlns:zbmath",
+    "https://zbmath.org/zbmath/elements/1.0/",
+)
+ron.setAttributeNS(
+    "xmls",
+    "xmlns:xsi",
+    "http://www.w3.org/2001/XMLSchema-instance",
+)
+
+def append_text_child(xmld, parent, name, value):
+    """
+    Creates new text node and appends it to parent
+    :param xmld:
+    :param parent: the node to append to
+    :param name:
+    :param value:
+    """
+    x_elem = xmld.createElement(f"zbmath:{0}".format(name))
+    text = xmld.createTextNode(str(value))
+    x_elem.appendChild(text)
+    parent.appendChild(x_elem)
+    return parent
+
+final_xml = append_text_child(xmld, ron, 'id', (res.result.id))
+
+print(final_xml.toprettyxml())
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