Wrong equation name
The equations introduced in P3M solver produce warning message:
asciidoctor: WARNING: fieldsolvers.adoc: line 325: id assigned to block already in use: eq-oneterm
asciidoctor: WARNING: fieldsolvers.adoc: line 338: id assigned to block already in use: eq-oneterm
asciidoctor: WARNING: fieldsolvers.adoc: line 351: id assigned to block already in use: eq-oneterm
asciidoctor: WARNING: fieldsolvers.adoc: line 368: id assigned to block already in use: eq-oneterm
The equations must be labeled with different names.